YAGNI Transistor (https://transistor.fm) https://feeds.transistor.fm/yagni You Ain't Gonna Need It, the podcast where we look at software practices and tools and ask: "do we need it?" © 2026 Matt Swanson 48791e87-a0b0-59ca-ac35-b588d2288b6c yes What would you say...you do here? Do we still need this podcast? WTF is YAGNI? en Thu, 01 Oct 2026 07:15:40 -0700 Thu, 01 Oct 2026 07:16:37 -0700 https://yagni.fm https://img.transistorcdn.com/TBQxQSXQnBG5uKXFSSupnBOEFq5BrRrWTn5lmRgqP2s/rs:fill:0:0:1/w:1400/h:1400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9zaG93/LzMyODAyLzE2NTk0/MDE1MTYtYXJ0d29y/ay5qcGc.jpg YAGNI https://yagni.fm episodic Matt Swanson You Ain't Gonna Need It, the podcast where we look at software practices and tools and ask: "do we need it?" You Ain't Gonna Need It, the podcast where we look at software practices and tools and ask: "do we need it?". Matt Swanson No No Camping chair development w/ John Nunemaker 3 3 3 3 Camping chair development w/ John Nunemaker full a2eab126-251c-4426-b814-a3448d2ec68d https://share.transistor.fm/s/77f3a7b0 John Nunemaker runs Fireside, Flipper and Box Out. He used to think of himself as a craftsman, until last December, when he found out that what he really loves is shipping. Now he reads the data models and queries but not the JavaScript. He's also dropping plugins and rewrote 80% of Fireside's infrastructure in three days while driving a camper. He and Matt talk about when you're the brain and when you're the hands, why agent tools hand you too many open loops at once, temporary scoped API keys, and why testing and verification might finally stop being seen as lower-status work.

Mentioned in this episode

  • Compound Engineering: Every's plan, build, review, compound loop. The last step turns anything you did into a process you can reuse next time. John used it for about a month before paring back his setup.
  • gstack: Garry Tan's Claude Code setup. John dropped most of it but kept the browse tools for before-and-after screenshots. Those led to his most-used homemade skill, /prove, which asks the agent to prove its work actually works from start to finish.
  • Caddy on-demand TLS: This replaced Fireside's tangle of Nginx, background jobs and Redis for custom-domain SSL. The app says which domains get a certificate, and Caddy handles the rest. Claude suggested it after John asked what tool does this.
  • Railway's canvas, for agents: This is John's pitch for fixing agent overload. He wants every worktree in Conductor, Codex or Cursor to be a box on an infinite canvas that you can group, connect and move out of the way, instead of an endless list of open loops.
  • Codex remote access: Scan a code with your phone, and your Mac, fully set up and sitting on your desk, takes commands from a camping chair. This is what got John "mainlining" Codex.
  • Cloudflare Tunnel: John's way to check work from his phone. The agent installs cloudflared, adds the host to Rails, restarts the server and gives him a link.
  • Toxiproxy: Shopify's proxy for simulating slow, failing or flaky connections. John used it on GitHub's availability team so that a notifications database outage wouldn't take down all of GitHub.
  • StrongDM's Digital Twin Universe: The "fake Slack" idea. Agents build single-binary clones of third-party APIs, so you can test OAuth, webhooks, rate limits and outages from any worktree. John now wants to do this for X and Meta at Box Out.
  • Wispr Flow: After years of hand and arm pain, John now talks to his agents all day. The only problem is a sore throat.
  • Flipper: John's feature flag product. His closing prediction: when nobody reads the code, feature flags and APMs matter more, so APMs will have to get much cheaper.
Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI]]> John Nunemaker runs Fireside, Flipper and Box Out. He used to think of himself as a craftsman, until last December, when he found out that what he really loves is shipping. Now he reads the data models and queries but not the JavaScript. He's also dropping plugins and rewrote 80% of Fireside's infrastructure in three days while driving a camper. He and Matt talk about when you're the brain and when you're the hands, why agent tools hand you too many open loops at once, temporary scoped API keys, and why testing and verification might finally stop being seen as lower-status work.

Mentioned in this episode

  • Compound Engineering: Every's plan, build, review, compound loop. The last step turns anything you did into a process you can reuse next time. John used it for about a month before paring back his setup.
  • gstack: Garry Tan's Claude Code setup. John dropped most of it but kept the browse tools for before-and-after screenshots. Those led to his most-used homemade skill, /prove, which asks the agent to prove its work actually works from start to finish.
  • Caddy on-demand TLS: This replaced Fireside's tangle of Nginx, background jobs and Redis for custom-domain SSL. The app says which domains get a certificate, and Caddy handles the rest. Claude suggested it after John asked what tool does this.
  • Railway's canvas, for agents: This is John's pitch for fixing agent overload. He wants every worktree in Conductor, Codex or Cursor to be a box on an infinite canvas that you can group, connect and move out of the way, instead of an endless list of open loops.
  • Codex remote access: Scan a code with your phone, and your Mac, fully set up and sitting on your desk, takes commands from a camping chair. This is what got John "mainlining" Codex.
  • Cloudflare Tunnel: John's way to check work from his phone. The agent installs cloudflared, adds the host to Rails, restarts the server and gives him a link.
  • Toxiproxy: Shopify's proxy for simulating slow, failing or flaky connections. John used it on GitHub's availability team so that a notifications database outage wouldn't take down all of GitHub.
  • StrongDM's Digital Twin Universe: The "fake Slack" idea. Agents build single-binary clones of third-party APIs, so you can test OAuth, webhooks, rate limits and outages from any worktree. John now wants to do this for X and Meta at Box Out.
  • Wispr Flow: After years of hand and arm pain, John now talks to his agents all day. The only problem is a sore throat.
  • Flipper: John's feature flag product. His closing prediction: when nobody reads the code, feature flags and APMs matter more, so APMs will have to get much cheaper.
Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI]]> Thu, 01 Oct 2026 07:10:16 -0700 Matt Swanson Matt Swanson 3794 John Nunemaker runs Fireside, Flipper and Box Out. He used to think of himself as a craftsman, until last December, when he found out that what he really loves is shipping. Now he reads the data models and queries but not the JavaScript. He's also dropping plugins and rewrote 80% of Fireside's infrastructure in three days while driving a camper. He and Matt talk about when you're the brain and when you're the hands, why agent tools hand you too many open loops at once, temporary scoped API keys, and why testing and verification might finally stop being seen as lower-status work.

Mentioned in this episode

  • Compound Engineering: Every's plan, build, review, compound loop. The last step turns anything you did into a process you can reuse next time. John used it for about a month before paring back his setup.
  • gstack: Garry Tan's Claude Code setup. John dropped most of it but kept the browse tools for before-and-after screenshots. Those led to his most-used homemade skill, /prove, which asks the agent to prove its work actually works from start to finish.
  • Caddy on-demand TLS: This replaced Fireside's tangle of Nginx, background jobs and Redis for custom-domain SSL. The app says which domains get a certificate, and Caddy handles the rest. Claude suggested it after John asked what tool does this.
  • Railway's canvas, for agents: This is John's pitch for fixing agent overload. He wants every worktree in Conductor, Codex or Cursor to be a box on an infinite canvas that you can group, connect and move out of the way, instead of an endless list of open loops.
  • Codex remote access: Scan a code with your phone, and your Mac, fully set up and sitting on your desk, takes commands from a camping chair. This is what got John "mainlining" Codex.
  • Cloudflare Tunnel: John's way to check work from his phone. The agent installs cloudflared, adds the host to Rails, restarts the server and gives him a link.
  • Toxiproxy: Shopify's proxy for simulating slow, failing or flaky connections. John used it on GitHub's availability team so that a notifications database outage wouldn't take down all of GitHub.
  • StrongDM's Digital Twin Universe: The "fake Slack" idea. Agents build single-binary clones of third-party APIs, so you can test OAuth, webhooks, rate limits and outages from any worktree. John now wants to do this for X and Meta at Box Out.
  • Wispr Flow: After years of hand and arm pain, John now talks to his agents all day. The only problem is a sore throat.
  • Flipper: John's feature flag product. His closing prediction: when nobody reads the code, feature flags and APMs matter more, so APMs will have to get much cheaper.
Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI]]> No LLM junk food w/ Justin Duke 3 3 2 2 LLM junk food w/ Justin Duke full 7258c30f-22d5-4f0f-95f4-b533de509ff9 https://share.transistor.fm/s/c11d83ab Justin Duke, who runs Buttondown, calls himself a "radical LLM centrist." About two-thirds of Buttondown's merged code comes from LLMs, but he still pushes back on the most extreme software factory takes. He and Matt talk about why most "factories" are only tuned for throughput and why so much agent work is snacking: low effort and low value. They also get into the rise of fake third-party services, and whether Kanban is a warning about borrowing manufacturing ideas without the principles behind them. Plus: a huge pile of regexes, CI that rejects PRs without screenshots, and why Buttondown's Storybook has quietly become its staging server.

Mentioned in this episode

  • Snacks are cheaper and tastier than ever: Justin's post on how LLMs make low-effort, low-value work very tempting. You get the rush of 15 merged PRs and no effect on customers. It pairs well with his Be careful what you make easier.
  • PlanetScale's self-improving database: Both teams feed PlanetScale's Insights and schema recommendations to agents that open PRs, some of which merge automatically. It's close to a free lunch, though Justin argues it's also where the factory metaphor breaks, since real factories don't improve themselves.
  • Linear Customer Requests: Justin's favorite little-used Linear feature. You link issues to customers along with their revenue, so "who's asking for this, and does it change whether they churn?" gets answered before an agent starts on the backlog.
  • Plain: Buttondown's support tool. Instead of sending every thread to an LLM classifier the way Plain would like, they use a "staggeringly terrifying" pile of regexes that's easy to improve over time. Matt's team went the same way, with LLMs writing the regex instead of being the classifier.
  • StrongDM's Digital Twin Universe: This is the software factory's take on the manufacturing "digital twin." StrongDM had agents build clones of Okta, Jira and Slack from their public API docs so they could run thousands of test scenarios an hour.
  • Miniflare vs. stripe-mock: What matters most in a fake service is keeping state. Cloudflare's local simulator remembers what you did. With Stripe's mock, if you create a customer and then list customers, you get an empty list.
  • Litmus / Email on Acid: Testing email rendering still means somebody keeping a headless Windows XP box running. Now it's much cheaper to build that kind of internal tool yourself.
  • Storybook + Buttondown's demo site: Buttondown's "storybook maximalist" setup has stories for every page, component and transactional email, all snapshot tested. The public demo site with realistic data covers everything else, so they barely use their old staging server.
  • Rails forensics skill for CVE-2026-66066: After the Active Storage image-upload RCE, known as KindaRails2Shell, 37signals released agent skills that check whether you were vulnerable and whether you were actually exploited. A small team would never have done that kind of investigation before.
  • The productivity paradox: Justin asks why GDP hasn't grown with technology. His test for LLMs is what they let you do that your people and budget couldn't do three years ago.


Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI

]]> Justin Duke, who runs Buttondown, calls himself a "radical LLM centrist." About two-thirds of Buttondown's merged code comes from LLMs, but he still pushes back on the most extreme software factory takes. He and Matt talk about why most "factories" are only tuned for throughput and why so much agent work is snacking: low effort and low value. They also get into the rise of fake third-party services, and whether Kanban is a warning about borrowing manufacturing ideas without the principles behind them. Plus: a huge pile of regexes, CI that rejects PRs without screenshots, and why Buttondown's Storybook has quietly become its staging server.

Mentioned in this episode

  • Snacks are cheaper and tastier than ever: Justin's post on how LLMs make low-effort, low-value work very tempting. You get the rush of 15 merged PRs and no effect on customers. It pairs well with his Be careful what you make easier.
  • PlanetScale's self-improving database: Both teams feed PlanetScale's Insights and schema recommendations to agents that open PRs, some of which merge automatically. It's close to a free lunch, though Justin argues it's also where the factory metaphor breaks, since real factories don't improve themselves.
  • Linear Customer Requests: Justin's favorite little-used Linear feature. You link issues to customers along with their revenue, so "who's asking for this, and does it change whether they churn?" gets answered before an agent starts on the backlog.
  • Plain: Buttondown's support tool. Instead of sending every thread to an LLM classifier the way Plain would like, they use a "staggeringly terrifying" pile of regexes that's easy to improve over time. Matt's team went the same way, with LLMs writing the regex instead of being the classifier.
  • StrongDM's Digital Twin Universe: This is the software factory's take on the manufacturing "digital twin." StrongDM had agents build clones of Okta, Jira and Slack from their public API docs so they could run thousands of test scenarios an hour.
  • Miniflare vs. stripe-mock: What matters most in a fake service is keeping state. Cloudflare's local simulator remembers what you did. With Stripe's mock, if you create a customer and then list customers, you get an empty list.
  • Litmus / Email on Acid: Testing email rendering still means somebody keeping a headless Windows XP box running. Now it's much cheaper to build that kind of internal tool yourself.
  • Storybook + Buttondown's demo site: Buttondown's "storybook maximalist" setup has stories for every page, component and transactional email, all snapshot tested. The public demo site with realistic data covers everything else, so they barely use their old staging server.
  • Rails forensics skill for CVE-2026-66066: After the Active Storage image-upload RCE, known as KindaRails2Shell, 37signals released agent skills that check whether you were vulnerable and whether you were actually exploited. A small team would never have done that kind of investigation before.
  • The productivity paradox: Justin asks why GDP hasn't grown with technology. His test for LLMs is what they let you do that your people and budget couldn't do three years ago.


Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI

]]> Thu, 01 Oct 2026 06:58:46 -0700 Matt Swanson Matt Swanson 3514 Justin Duke, who runs Buttondown, calls himself a "radical LLM centrist." About two-thirds of Buttondown's merged code comes from LLMs, but he still pushes back on the most extreme software factory takes. He and Matt talk about why most "factories" are only tuned for throughput and why so much agent work is snacking: low effort and low value. They also get into the rise of fake third-party services, and whether Kanban is a warning about borrowing manufacturing ideas without the principles behind them. Plus: a huge pile of regexes, CI that rejects PRs without screenshots, and why Buttondown's Storybook has quietly become its staging server.

Mentioned in this episode

  • Snacks are cheaper and tastier than ever: Justin's post on how LLMs make low-effort, low-value work very tempting. You get the rush of 15 merged PRs and no effect on customers. It pairs well with his Be careful what you make easier.
  • PlanetScale's self-improving database: Both teams feed PlanetScale's Insights and schema recommendations to agents that open PRs, some of which merge automatically. It's close to a free lunch, though Justin argues it's also where the factory metaphor breaks, since real factories don't improve themselves.
  • Linear Customer Requests: Justin's favorite little-used Linear feature. You link issues to customers along with their revenue, so "who's asking for this, and does it change whether they churn?" gets answered before an agent starts on the backlog.
  • Plain: Buttondown's support tool. Instead of sending every thread to an LLM classifier the way Plain would like, they use a "staggeringly terrifying" pile of regexes that's easy to improve over time. Matt's team went the same way, with LLMs writing the regex instead of being the classifier.
  • StrongDM's Digital Twin Universe: This is the software factory's take on the manufacturing "digital twin." StrongDM had agents build clones of Okta, Jira and Slack from their public API docs so they could run thousands of test scenarios an hour.
  • Miniflare vs. stripe-mock: What matters most in a fake service is keeping state. Cloudflare's local simulator remembers what you did. With Stripe's mock, if you create a customer and then list customers, you get an empty list.
  • Litmus / Email on Acid: Testing email rendering still means somebody keeping a headless Windows XP box running. Now it's much cheaper to build that kind of internal tool yourself.
  • Storybook + Buttondown's demo site: Buttondown's "storybook maximalist" setup has stories for every page, component and transactional email, all snapshot tested. The public demo site with realistic data covers everything else, so they barely use their old staging server.
  • Rails forensics skill for CVE-2026-66066: After the Active Storage image-upload RCE, known as KindaRails2Shell, 37signals released agent skills that check whether you were vulnerable and whether you were actually exploited. A small team would never have done that kind of investigation before.
  • The productivity paradox: Justin asks why GDP hasn't grown with technology. His test for LLMs is what they let you do that your people and budget couldn't do three years ago.


Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI

]]> No Infinite plausible PRs w/ Nate Berkopec 3 3 1 1 Infinite plausible PRs w/ Nate Berkopec full b2c02322-c1ad-4cfc-bb92-f0d7abbbe3a3 https://share.transistor.fm/s/94b6fe47 Back in February, Nate said that coding workflows built around adding more human-in-the-loop steps were a dead end, and that the end state is the "dark factory," where humans aren't allowed on the floor. Six months later, Matt asks him where he stands now. They cover why agents that produce endless plausible PRs haven't made anyone much faster, and why the real bottleneck is deciding what can actually be merged. They also talk about why software never learned to measure "quality" the way manufacturing does, why everyone's factory will probably be custom-built, and why feature development is the last thing you should automate. Along the way: Toyota fenders, bourbon tasters and a Dependabot setup you could build this afternoon.

Mentioned in this episode

  • METR: AI's effect on experienced open-source developers: This is "the METR study nobody likes to cite." Experienced maintainers thought AI tools made them about 20% faster, but they were actually 19% slower. Compare it with the time-horizons graph that everyone does cite.
  • Tobi Lütke's Liquid PR #2056: An overnight autoresearch loop found parse and render times 53% faster, with 61% fewer allocations. The tests pass, but the PR is still open, because Liquid runs all of Shopify and has no formal spec. Background: Shopify's autoresearch write-up.
  • Hacker Typer: Nate's name for running six agent windows at once. It feels productive and hits every "chimp reward pathway," but that doesn't mean anything is getting done.
  • Claude Code Review: Anthropic's multi-agent PR reviewer, which costs about $15–25 per review. It's an example of AI now beating humans at catching bugs, and of how token costs add up once agents are opening their own PRs.
  • Cursor Automations: This is what Matt's team built their "gateway drug" factory on. When Dependabot opens a PR, an agent reads every changelog, checks the codebase for affected code, and then either merges the PR or flags a human.
  • Intercom: AI is approving our pull requests: This is where Nate got the counter-metric of tracking how many auto-merges get reverted. It keeps "merge rate" honest.
  • Why Ramp built its own background agent: Ramp and Intercom are both B2B SaaS companies, but they built very different factories. That's Nate's case for why every factory will be custom-built.
  • whenwords: Drew Breunig's "software library with no code." It's just a spec and tests, and an LLM builds it in any language. Nate calls it the 3D printing of software factories: impressive but narrow.
  • The Cockburn Scale: Alistair Cockburn's grid of team size against criticality, from "loss of comfort" up to "loss of life." Not every app needs the same factory, because HIPAA and rocket software aren't a CRUD app.
  • The Mythical Man-Month: Brooks's law says adding people slows a project down because of communication overhead. Nate argues it doesn't apply to agents, and that's why factories can scale when teams of people can't.
Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI]]> Back in February, Nate said that coding workflows built around adding more human-in-the-loop steps were a dead end, and that the end state is the "dark factory," where humans aren't allowed on the floor. Six months later, Matt asks him where he stands now. They cover why agents that produce endless plausible PRs haven't made anyone much faster, and why the real bottleneck is deciding what can actually be merged. They also talk about why software never learned to measure "quality" the way manufacturing does, why everyone's factory will probably be custom-built, and why feature development is the last thing you should automate. Along the way: Toyota fenders, bourbon tasters and a Dependabot setup you could build this afternoon.

Mentioned in this episode

  • METR: AI's effect on experienced open-source developers: This is "the METR study nobody likes to cite." Experienced maintainers thought AI tools made them about 20% faster, but they were actually 19% slower. Compare it with the time-horizons graph that everyone does cite.
  • Tobi Lütke's Liquid PR #2056: An overnight autoresearch loop found parse and render times 53% faster, with 61% fewer allocations. The tests pass, but the PR is still open, because Liquid runs all of Shopify and has no formal spec. Background: Shopify's autoresearch write-up.
  • Hacker Typer: Nate's name for running six agent windows at once. It feels productive and hits every "chimp reward pathway," but that doesn't mean anything is getting done.
  • Claude Code Review: Anthropic's multi-agent PR reviewer, which costs about $15–25 per review. It's an example of AI now beating humans at catching bugs, and of how token costs add up once agents are opening their own PRs.
  • Cursor Automations: This is what Matt's team built their "gateway drug" factory on. When Dependabot opens a PR, an agent reads every changelog, checks the codebase for affected code, and then either merges the PR or flags a human.
  • Intercom: AI is approving our pull requests: This is where Nate got the counter-metric of tracking how many auto-merges get reverted. It keeps "merge rate" honest.
  • Why Ramp built its own background agent: Ramp and Intercom are both B2B SaaS companies, but they built very different factories. That's Nate's case for why every factory will be custom-built.
  • whenwords: Drew Breunig's "software library with no code." It's just a spec and tests, and an LLM builds it in any language. Nate calls it the 3D printing of software factories: impressive but narrow.
  • The Cockburn Scale: Alistair Cockburn's grid of team size against criticality, from "loss of comfort" up to "loss of life." Not every app needs the same factory, because HIPAA and rocket software aren't a CRUD app.
  • The Mythical Man-Month: Brooks's law says adding people slows a project down because of communication overhead. Nate argues it doesn't apply to agents, and that's why factories can scale when teams of people can't.
Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI]]> Wed, 30 Sep 2026 10:12:32 -0700 Matt Swanson Matt Swanson 3154 Back in February, Nate said that coding workflows built around adding more human-in-the-loop steps were a dead end, and that the end state is the "dark factory," where humans aren't allowed on the floor. Six months later, Matt asks him where he stands now. They cover why agents that produce endless plausible PRs haven't made anyone much faster, and why the real bottleneck is deciding what can actually be merged. They also talk about why software never learned to measure "quality" the way manufacturing does, why everyone's factory will probably be custom-built, and why feature development is the last thing you should automate. Along the way: Toyota fenders, bourbon tasters and a Dependabot setup you could build this afternoon.

Mentioned in this episode

  • METR: AI's effect on experienced open-source developers: This is "the METR study nobody likes to cite." Experienced maintainers thought AI tools made them about 20% faster, but they were actually 19% slower. Compare it with the time-horizons graph that everyone does cite.
  • Tobi Lütke's Liquid PR #2056: An overnight autoresearch loop found parse and render times 53% faster, with 61% fewer allocations. The tests pass, but the PR is still open, because Liquid runs all of Shopify and has no formal spec. Background: Shopify's autoresearch write-up.
  • Hacker Typer: Nate's name for running six agent windows at once. It feels productive and hits every "chimp reward pathway," but that doesn't mean anything is getting done.
  • Claude Code Review: Anthropic's multi-agent PR reviewer, which costs about $15–25 per review. It's an example of AI now beating humans at catching bugs, and of how token costs add up once agents are opening their own PRs.
  • Cursor Automations: This is what Matt's team built their "gateway drug" factory on. When Dependabot opens a PR, an agent reads every changelog, checks the codebase for affected code, and then either merges the PR or flags a human.
  • Intercom: AI is approving our pull requests: This is where Nate got the counter-metric of tracking how many auto-merges get reverted. It keeps "merge rate" honest.
  • Why Ramp built its own background agent: Ramp and Intercom are both B2B SaaS companies, but they built very different factories. That's Nate's case for why every factory will be custom-built.
  • whenwords: Drew Breunig's "software library with no code." It's just a spec and tests, and an LLM builds it in any language. Nate calls it the 3D printing of software factories: impressive but narrow.
  • The Cockburn Scale: Alistair Cockburn's grid of team size against criticality, from "loss of comfort" up to "loss of life." Not every app needs the same factory, because HIPAA and rocket software aren't a CRUD app.
  • The Mythical Man-Month: Brooks's law says adding people slows a project down because of communication overhead. Nate argues it doesn't apply to agents, and that's why factories can scale when teams of people can't.
Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI]]> No What would you say...you do here? 3 3 What would you say...you do here? trailer f1e4c248-6aa9-49f4-ba2a-25a6259dc997 https://share.transistor.fm/s/36813674 Software used to be something you sat down and wrote.
Line by line. 
Decision by decision.


The work lived in the hands of the person at the keyboard.


That world doesn’t really exist anymore. Everything is changing: who does the work, how fast it moves, what counts as “writing,” what still needs a human in the loop


Instincts and best practices are built on ideas that are getting invalidated faster than ever. So we have to go back and figure out what we're actually doing here. 


Welcome to YAGNI, Season 3: The Software Factory.

Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI


]]> Software used to be something you sat down and wrote.
Line by line. 
Decision by decision.


The work lived in the hands of the person at the keyboard.


That world doesn’t really exist anymore. Everything is changing: who does the work, how fast it moves, what counts as “writing,” what still needs a human in the loop


Instincts and best practices are built on ideas that are getting invalidated faster than ever. So we have to go back and figure out what we're actually doing here. 


Welcome to YAGNI, Season 3: The Software Factory.

Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI


]]> Wed, 30 Sep 2026 05:58:02 -0700 Matt Swanson Matt Swanson 52 Software used to be something you sat down and wrote.
Line by line. 
Decision by decision.


The work lived in the hands of the person at the keyboard.


That world doesn’t really exist anymore. Everything is changing: who does the work, how fast it moves, what counts as “writing,” what still needs a human in the loop


Instincts and best practices are built on ideas that are getting invalidated faster than ever. So we have to go back and figure out what we're actually doing here. 


Welcome to YAGNI, Season 3: The Software Factory.

Thank you to this season’s sponsor Laravel Cloud. Laravel Cloud is expanding beyond PHP to host your Rails, Node, or Django apps. For early access to the best place to host your app, email haley@laravel.com and mention YAGNI


]]> No Programming Books w/ Aaron Francis 2 2 6 6 Programming Books w/ Aaron Francis full ec8beef1-e48f-49db-a7ad-e58f3466fa97 https://share.transistor.fm/s/171e1903 Matt and Aaron talk about programming books and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Aaron Francis on Twitter // PlanetScale
Matt Swanson on Twitter // arrows.to

Aaron's shed
Aaron reading printed docs on the beach
SQL Window Functions
The Pragmatic Programmer
The Timeless Way of Building
Culture is Stuck
Use the Index, Luke!
MySQL for Developers course
Why do programmers use books as monitor stands?

]]> Matt and Aaron talk about programming books and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Aaron Francis on Twitter // PlanetScale
Matt Swanson on Twitter // arrows.to

Aaron's shed
Aaron reading printed docs on the beach
SQL Window Functions
The Pragmatic Programmer
The Timeless Way of Building
Culture is Stuck
Use the Index, Luke!
MySQL for Developers course
Why do programmers use books as monitor stands?

]]> Tue, 05 Dec 2023 07:00:00 -0800 Matt Swanson Matt Swanson 2967 Matt and Aaron talk about programming books and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Aaron Francis on Twitter // PlanetScale
Matt Swanson on Twitter // arrows.to

Aaron's shed
Aaron reading printed docs on the beach
SQL Window Functions
The Pragmatic Programmer
The Timeless Way of Building
Culture is Stuck
Use the Index, Luke!
MySQL for Developers course
Why do programmers use books as monitor stands?

]]> No Redis w/ Nate Berkopec 2 2 5 5 Redis w/ Nate Berkopec full e455e70c-a022-41bd-a76b-b194d8f376d6 https://share.transistor.fm/s/e7f07a52 Matt and Nate talk about Redis and try to answer the question "do we need it?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Nate Berkopec on Twitter // Speedshop
Matt Swanson on Twitter // arrows.to

"Redis is not faster than your database"
"Your data fits in RAM"
March of progress
neo4j
sidekiq
ACID
kredis
Wafris
"Running Sidekiq...with a volatile eviction policy"
Solid Queue
Solid Cache
The open source gift exchange
puma/puma
The Silver Rule

]]> Matt and Nate talk about Redis and try to answer the question "do we need it?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Nate Berkopec on Twitter // Speedshop
Matt Swanson on Twitter // arrows.to

"Redis is not faster than your database"
"Your data fits in RAM"
March of progress
neo4j
sidekiq
ACID
kredis
Wafris
"Running Sidekiq...with a volatile eviction policy"
Solid Queue
Solid Cache
The open source gift exchange
puma/puma
The Silver Rule

]]> Tue, 28 Nov 2023 07:00:00 -0800 Matt Swanson Matt Swanson 2560 Matt and Nate talk about Redis and try to answer the question "do we need it?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Nate Berkopec on Twitter // Speedshop
Matt Swanson on Twitter // arrows.to

"Redis is not faster than your database"
"Your data fits in RAM"
March of progress
neo4j
sidekiq
ACID
kredis
Wafris
"Running Sidekiq...with a volatile eviction policy"
Solid Queue
Solid Cache
The open source gift exchange
puma/puma
The Silver Rule

]]> No Service Objects w/ Jason Swett 2 2 4 4 Service Objects w/ Jason Swett full 1841a05a-5772-4d4e-954f-cc3837cd481a https://share.transistor.fm/s/71fa5004 Matt and Jason talk about Service Objects and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Jason Swett on Twitter // Code with Jason
Matt Swanson on Twitter // arrows.to

Jason's Snail Mail newsletter
Brevity is the soul of wit

]]> Matt and Jason talk about Service Objects and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Jason Swett on Twitter // Code with Jason
Matt Swanson on Twitter // arrows.to

Jason's Snail Mail newsletter
Brevity is the soul of wit

]]> Tue, 21 Nov 2023 06:58:44 -0800 Matt Swanson Matt Swanson 91 Matt and Jason talk about Service Objects and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Jason Swett on Twitter // Code with Jason
Matt Swanson on Twitter // arrows.to

Jason's Snail Mail newsletter
Brevity is the soul of wit

]]> No Testing w/ Josh Pigford 2 2 3 3 Testing w/ Josh Pigford full 43182548-5123-43cc-8da5-d9e8f8149e68 https://share.transistor.fm/s/76f6605b Matt and Josh talk about automated testing and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Josh Pigford on Twitter // Detangle
Matt Swanson on Twitter // arrows.to

Wittgenstein's Ruler
Why doesn't Stripe have a /mrr endpoint?
GitHub Project Paper Cuts
Baremetrics
Maybe
Laser Tweets
Cedar & Sail
The best restaurant in the world
Kim Kardashian - Kimoji app
Cursor AI Editor
Stated vs Revealed preferences

]]> Matt and Josh talk about automated testing and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Josh Pigford on Twitter // Detangle
Matt Swanson on Twitter // arrows.to

Wittgenstein's Ruler
Why doesn't Stripe have a /mrr endpoint?
GitHub Project Paper Cuts
Baremetrics
Maybe
Laser Tweets
Cedar & Sail
The best restaurant in the world
Kim Kardashian - Kimoji app
Cursor AI Editor
Stated vs Revealed preferences

]]> Tue, 14 Nov 2023 08:00:00 -0800 Matt Swanson Matt Swanson 2636 Matt and Josh talk about automated testing and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Josh Pigford on Twitter // Detangle
Matt Swanson on Twitter // arrows.to

Wittgenstein's Ruler
Why doesn't Stripe have a /mrr endpoint?
GitHub Project Paper Cuts
Baremetrics
Maybe
Laser Tweets
Cedar & Sail
The best restaurant in the world
Kim Kardashian - Kimoji app
Cursor AI Editor
Stated vs Revealed preferences

]]> No GraphQL w/ Trevor Turk (Bonus: VCR) 2 2 2 2 GraphQL w/ Trevor Turk (Bonus: VCR) full 53685b9d-bdb6-438b-99b3-a784f5a02ed4 https://share.transistor.fm/s/7ddb7f12 Matt and Trevor talk about GraphQL and try to answer the question "do we need it?" (Bonus hot takes on VCR snapshot testing)

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Trevor Turk on Twitter // Hello Weather
Matt Swanson on Twitter // arrows.to


GraphQL: The Documentary
GraphiQL
n+1 problems in GraphQL
BFF: Backend for Frontend
Graph Theory
Schema stitching

Bonus: VCR

]]> Matt and Trevor talk about GraphQL and try to answer the question "do we need it?" (Bonus hot takes on VCR snapshot testing)

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Trevor Turk on Twitter // Hello Weather
Matt Swanson on Twitter // arrows.to


GraphQL: The Documentary
GraphiQL
n+1 problems in GraphQL
BFF: Backend for Frontend
Graph Theory
Schema stitching

Bonus: VCR

]]> Tue, 07 Nov 2023 05:00:00 -0800 Matt Swanson Matt Swanson 3256 Matt and Trevor talk about GraphQL and try to answer the question "do we need it?" (Bonus hot takes on VCR snapshot testing)

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Trevor Turk on Twitter // Hello Weather
Matt Swanson on Twitter // arrows.to


GraphQL: The Documentary
GraphiQL
n+1 problems in GraphQL
BFF: Backend for Frontend
Graph Theory
Schema stitching

Bonus: VCR

]]> No Friday Deploys w/ Charity Majors 2 2 1 1 Friday Deploys w/ Charity Majors full ec251139-f091-4511-84ab-cf0d67e83890 https://share.transistor.fm/s/6eaaf593 Matt and Charity talk about Friday Deploys and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Charity Majors on Twitter // honeycomb.io
Matt Swanson on Twitter // arrows.to

Friday deploy freezes are exactly like murdering puppies
Coaching tree
Frequency Reduces Difficulty (Martin Fowler)
Payoff space vs consistency space
Blame-aware postmortem
DORA metrics

]]> Matt and Charity talk about Friday Deploys and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Charity Majors on Twitter // honeycomb.io
Matt Swanson on Twitter // arrows.to

Friday deploy freezes are exactly like murdering puppies
Coaching tree
Frequency Reduces Difficulty (Martin Fowler)
Payoff space vs consistency space
Blame-aware postmortem
DORA metrics

]]> Wed, 01 Nov 2023 06:48:05 -0700 Matt Swanson Matt Swanson 3070 Matt and Charity talk about Friday Deploys and try to answer the question "do we need them?"

This season of YAGNI was made possible by our friends at Flipper Cloud - Are big launches stressing you out? Then you need feature flags!
Flipper Cloud helps your team deploy the code now and then roll out features when you’re good and ready. Get started for free at
flippercloud.io


Charity Majors on Twitter // honeycomb.io
Matt Swanson on Twitter // arrows.to

Friday deploy freezes are exactly like murdering puppies
Coaching tree
Frequency Reduces Difficulty (Martin Fowler)
Payoff space vs consistency space
Blame-aware postmortem
DORA metrics

]]> No Do we still need this podcast? 2 2 Do we still need this podcast? trailer 5bbb73d0-0413-4cc4-80cf-51b0b0d1c4b6 https://share.transistor.fm/s/575602f5 Mon, 23 Oct 2023 14:01:07 -0700 Matt Swanson Matt Swanson 91 No RSpec w/ Justin Searls 1 1 4 4 RSpec w/ Justin Searls full f5ca7b3b-6d18-46d2-8ab4-362c6fc89f6d https://share.transistor.fm/s/4673c3ee Justin Searls on Twitter
Matt Swanson on Twitter

Arrows
Test Double

Justin's "What do you like about RSpec" thread (2016)
Dan North BDD
Nate Berkopec "Reading rspec documentation like..." tweet
Corey Haines: Fast Rails Tests
Kent Beck: "I get paid for code that works, not for tests..."
Nick Quaranto's minitest CLI wrapper
Mocktail gem
test_data gem

]]> Justin Searls on Twitter
Matt Swanson on Twitter

Arrows
Test Double

Justin's "What do you like about RSpec" thread (2016)
Dan North BDD
Nate Berkopec "Reading rspec documentation like..." tweet
Corey Haines: Fast Rails Tests
Kent Beck: "I get paid for code that works, not for tests..."
Nick Quaranto's minitest CLI wrapper
Mocktail gem
test_data gem

]]> Mon, 21 Nov 2022 05:18:00 -0800 Matt Swanson Matt Swanson 3079 Matt and Justin talk about RSpec and testing DSLs and try to answer the question "do we need them?" Matt and Justin talk about RSpec and testing DSLs and try to answer the question "do we need them?" No Small user stories w/ Dave Copeland 1 1 3 3 Small user stories w/ Dave Copeland full dd87f604-72be-4c8c-b8fd-11644c28ef04 https://share.transistor.fm/s/2cc8362f Dave Copeland on Twitter
Matt Swanson on Twitter

Arrows
Mood Health

Taylorism / Scientific management
Google DORA Report
"Agile" on TikTok
The Joel Test
“Think of how stupid the average person is, and realize half of them are stupider than that.” George Carlin

]]> Dave Copeland on Twitter
Matt Swanson on Twitter

Arrows
Mood Health

Taylorism / Scientific management
Google DORA Report
"Agile" on TikTok
The Joel Test
“Think of how stupid the average person is, and realize half of them are stupider than that.” George Carlin

]]> Mon, 14 Nov 2022 14:17:32 -0800 Matt Swanson Matt Swanson 3091 Matt and Dave talk about small user stories and try to answer the question "do we need them?" Matt and Dave talk about small user stories and try to answer the question "do we need them?" No Staging servers w/ Justin Duke 1 1 2 2 Staging servers w/ Justin Duke full 081d303d-4356-4023-a782-0b513d316b69 https://share.transistor.fm/s/3bd2149f Justin Duke on Twitter
Matt Swanson on Twitter

Arrows
Buttondown

Accidental AirBnB "test" notification
The Pragmatic Programmer
"SICP" book
"We dont use a staging server" HN thread
Checklist Manifesto
IQ Bell Curve / Midwit - Know Your Meme

]]> Justin Duke on Twitter
Matt Swanson on Twitter

Arrows
Buttondown

Accidental AirBnB "test" notification
The Pragmatic Programmer
"SICP" book
"We dont use a staging server" HN thread
Checklist Manifesto
IQ Bell Curve / Midwit - Know Your Meme

]]> Mon, 07 Nov 2022 06:00:00 -0800 Matt Swanson Matt Swanson 2781 Matt and Justin talk about staging servers and try to answer the question "do we need them?" Matt and Justin talk about staging servers and try to answer the question "do we need them?" No Detailed commit messages w/ Chris Toomey 1 1 1 1 Detailed commit messages w/ Chris Toomey full 0164cb61-f538-4e91-92a6-53d9ae324ef1 https://share.transistor.fm/s/a7c0f4d7 Chris Toomey on Twitter
Matt Swanson on Twitter

Arrows
Sagewell Financial

Write Good Commit Messages by Blaming Others
The seven rules of a good git commit message
David Hemphill - WIP
Hot Ones
Russian Roulette and expected value 

]]> Chris Toomey on Twitter
Matt Swanson on Twitter

Arrows
Sagewell Financial

Write Good Commit Messages by Blaming Others
The seven rules of a good git commit message
David Hemphill - WIP
Hot Ones
Russian Roulette and expected value 

]]> Tue, 01 Nov 2022 05:41:33 -0700 Matt Swanson Matt Swanson 3183 Matt and Chris talk about detailed commit messages and try to answer the question "do we need them?" Matt and Chris talk about detailed commit messages and try to answer the question "do we need them?" No WTF is YAGNI? 1 1 1 1 WTF is YAGNI? trailer bd0b68a0-55eb-4dc6-9c7a-079a356b4aba https://share.transistor.fm/s/80ca6d53 Everything has to start somewhere. Why not here?

]]> Everything has to start somewhere. Why not here?

]]> Mon, 01 Aug 2022 17:57:01 -0700 Matt Swanson Matt Swanson 166 What if we don't, you know, actually need it? What if we don't, you know, actually need it? No