--- title: "Replacing 12K LoC with a 200 LoC Skill — David Gomes, Cursor" source_name: "AI Engineer" original_url: "https://www.youtube.com/watch?v=WE_Gnowy3uw" canonical_url: "https://www.traeai.com/articles/c774e3ec-66d2-48ca-836a-a69f330c6459" content_type: "video" language: "中文" score: 6 tags: ["Cursor Worktrees","Code Optimization","Git Workflow"] published_at: "2026-04-30T12:00:06+00:00" created_at: "2026-05-01T00:27:01.108825+00:00" --- # Replacing 12K LoC with a 200 LoC Skill — David Gomes, Cursor Canonical URL: https://www.traeai.com/articles/c774e3ec-66d2-48ca-836a-a69f330c6459 Original source: https://www.youtube.com/watch?v=WE_Gnowy3uw ## Summary David Gomes shares how he reduced 12,000 lines of code to just 200 using Cursor Worktrees, demonstrating an efficient approach to codebase management. ## Key Takeaways - 通过Cursor Worktrees技术，David Gomes实现了从12,000行代码减少到200行的优化。 - 演讲讨论了代码管理的新策略，对于大型代码库维护具有启示意义。 - 内容偏向实践分享，适合对代码优化和版本控制感兴趣的工程师。 ## Content Title: Cursor Worktrees: Deleting 12K LoC Code with 200 LoC Skills — David Gomes URL Source: http://www.youtube.com/watch?v=WE_Gnowy3uw Markdown Content: # Cursor Worktrees: Deleting 12K LoC Code with 200 LoC Skills — David Gomes - YouTube Back [![Image 1](http://www.youtube.com/watch?v=WE_Gnowy3uw)](http://www.youtube.com/ "YouTube Home") Skip navigation Search Search with your voice [](http://www.youtube.com/watch?v=WE_Gnowy3uw) [Sign in](https://accounts.google.com/ServiceLogin?service=youtube&uilel=3&passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Faction_handle_signin%3Dtrue%26app%3Ddesktop%26hl%3Den%26next%3Dhttps%253A%252F%252Fwww.youtube.com%252Fwatch%253Fv%253DWE_Gnowy3uw&hl=en&ec=65620) [![Image 2](http://www.youtube.com/watch?v=WE_Gnowy3uw)](http://www.youtube.com/ "YouTube Home") [](http://www.youtube.com/watch?v=WE_Gnowy3uw) [](http://www.youtube.com/watch?v=WE_Gnowy3uw) [](http://www.youtube.com/watch?v=WE_Gnowy3uw) [](http://www.youtube.com/watch?v=WE_Gnowy3uw) [Cursor Worktrees: Deleting 12K LoC Code with 200 LoC Skills — David Gomes](http://www.youtube.com/watch?v=WE_Gnowy3uw) [](http://www.youtube.com/watch?v=WE_Gnowy3uw) Tap to unmute 2x [![Image 3](http://www.youtube.com/watch?v=WE_Gnowy3uw)](http://www.youtube.com/watch?v=WE_Gnowy3uw) ## Cursor Worktrees: Deleting 12K LoC Code with 200 LoC Skills — David Gomes AI Engineer 4,010 views 12 hours ago [](http://www.youtube.com/watch?v=WE_Gnowy3uw) Search Copy link Info Shopping ![Image 4](http://www.youtube.com/watch?v=WE_Gnowy3uw) [![Image 5](http://www.youtube.com/watch?v=WE_Gnowy3uw)](http://www.youtube.com/watch?v=WE_Gnowy3uw) If playback doesn't begin shortly, try restarting your device. • You're signed out Videos you watch may be added to the TV's watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. Cancel Confirm [](http://www.youtube.com/watch?v=WE_Gnowy3uw) Share [](http://www.youtube.com/watch?v=WE_Gnowy3uw "Share link")- [x] Include playlist An error occurred while retrieving sharing information. Please try again later. ![Image 6](http://www.youtube.com/watch?v=WE_Gnowy3uw) 0:00 [](http://www.youtube.com/watch?v=WE_Gnowy3uw)[](https://www.youtube.com/watch?v=v4F1gFy-hqg "Next (SHIFT+n)") 0:00 / 0:00 Live •Watch full video • • [29:49 Andrej Karpathy: From Vibe Coding to Agentic Engineering Sequoia Capital 276K views • 1 day ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=96jN2OCOfLs)[1:36:30 Full Walkthrough: Workflow for AI Coding — Matt Pocock AI Engineer and Matt Pocock 252K views • 6 days ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=-QFHIoCo-Ko)[1:47:34 [Full Workshop] Building Conversational Agents — Thor Schaeff and Philipp Schmid, Google DeepMind AI Engineer 2.4K views • 8 hours ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=cVzf49yg0D8)[2:13:41 How GPT-5, Claude, and Gemini are actually trained and served – Reiner Pope Dwarkesh Patel 129K views • 1 day ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=xmkSf5IS-zw)[5:59 GitHub is having some major issues right now…Fireship 345K views • 7 hours ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=d53Zk28esmU)[40:57 Demis Hassabis: Agents, AGI & The Next Big Scientific Breakthrough Y Combinator 73K views • 1 day ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=JNyuX1zoOgU)[28:27 OpenAI's Greg Brockman: Why Human Attention Is the New BottleneckOpenAI's Sequoia Capital 5.9K views • 6 hours ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=bBS93A0BeNI)[8:34 I Quit My GitHub Job Because AI Breaks Software Zen van Riel 72K views • 2 weeks ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=aEL384kTznk)[20:13 Everything I Learned Training Frontier Small Models — Maxime Labonne, Liquid AI AI Engineer 14K views • 1 day ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=fLUtUkqYHnQ)[11:19 How To De-Slop A Codebase Ruined By AI (with one skill)Matt Pocock 46K views • 1 day ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=3MP8D-mdheA)[18:26 "Software Fundamentals Matter More Than Ever" — Matt Pocock AI Engineer and Matt Pocock 434K views • 7 days ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=v4F1gFy-hqg)[23:58 GitHub is falling apart.ForrestKnight 21K views • 9 hours ago Live Playlist ()Mix (50+)](https://www.youtube.com/watch?v=t-DM44d-qhU) Sign in to confirm you’re not a bot This helps protect our community. [Learn more](https://support.google.com/youtube/answer/3037019#zippy=%2Ccheck-that-youre-signed-into-youtube) [Sign in](https://accounts.google.com/ServiceLogin?service=youtube&uilel=3&passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Faction_handle_signin%3Dtrue%26app%3Ddesktop%26hl%3Den%26next%3D%252Fwatch%253Fv%253DWE_Gnowy3uw&hl=en) # Cursor Worktrees: Deleting 12K LoC Code with 200 LoC Skills — David Gomes [![Image 7](https://yt3.ggpht.com/ajVemEB89DAOemsbfuMY6ZOWXJAACx3cbty9z21jeqRKODaVkDBSRun1b1xfQJljEsziOWS_Mg=s48-c-k-c0x00ffffff-no-rj)](http://www.youtube.com/@aiDotEngineer) [AI Engineer](http://www.youtube.com/@aiDotEngineer) AI Engineer 437K subscribers Subscribe Subscribed 102 Share Save Download Download 4K views 12 hours ago 4,010 views • Premiered 12 hours ago David Gomes shows how Cursor replaced a heavyweight WorkTrees feature with a lightweight layer built from skills, commands, and subagents. He walks through how parallel coding workflows were recreated with roughly 200 lines of Markdown, plus the tradeoffs, failure modes, and lessons that come with moving product behavior from code into prompts.…...more ...more How this was made Auto-dubbed Audio tracks for some languages were automatically generated. [Learn more](http://support.google.com/youtube/answer/15569972?hl=en) ## Key moments View all [![Image 8](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Introduction and the concept of markdown as code #### Introduction and the concept of markdown as code 0:14](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=14s) #### [Introduction and the concept of markdown as code](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=14s) 0:14 [![Image 9](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Recap of Git work trees in Cursor #### Recap of Git work trees in Cursor 0:59](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=59s) #### [Recap of Git work trees in Cursor](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=59s) 0:59 [![Image 10](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Complexity of the initial implementation #### Complexity of the initial implementation 3:10](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=190s) #### [Complexity of the initial implementation](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=190s) 3:10 [![Image 11](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Deleting 15,000 lines of code #### Deleting 15,000 lines of code 4:18](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=258s) #### [Deleting 15,000 lines of code](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=258s) 4:18 [![Image 12](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Implementing features with Skills and Sub-agents #### Implementing features with Skills and Sub-agents 4:54](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=294s) #### [Implementing features with Skills and Sub-agents](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=294s) 4:54 [![Image 13](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### How the new Skills are structured #### How the new Skills are structured 5:51](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=351s) #### [How the new Skills are structured](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=351s) 5:51 [![Image 14](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### New Slash commands and workflow #### New Slash commands and workflow 7:58](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=478s) #### [New Slash commands and workflow](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=478s) 7:58 [![Image 15](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Pros of the new implementation #### Pros of the new implementation 9:58](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=598s) #### [Pros of the new implementation](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=598s) 9:58 Transcript Follow along using the transcript. Show transcript [![Image 16](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### AI Engineer 437K subscribers](http://www.youtube.com/@aiDotEngineer) [Videos](http://www.youtube.com/channel/UCLKPca3kwwd-B59HNr-_lvA/videos)[About](http://www.youtube.com/channel/UCLKPca3kwwd-B59HNr-_lvA/about) Show less [](http://www.youtube.com/watch?v=WE_Gnowy3uw) # Cursor Worktrees: Deleting 12K LoC Code with 200 LoC Skills — David Gomes 4,010 views 4K views Premiered 12 hours ago 102 Share Save Download Download ## 9 Comments Sort comments Sort by [Top Show featured comments](http://www.youtube.com/watch?v=WE_Gnowy3uw)[Newest Show recent comments, including potential spam](http://www.youtube.com/watch?v=WE_Gnowy3uw) ![Image 17: Default profile photo](https://yt3.ggpht.com/a/default-user=s48-c-k-c0x00ffffff-no-rj) Add a comment... ![Image 18](https://yt3.ggpht.com/ytc/AIdro_mBXJv6Ut0U-Sf_bY9InmCA7VlYE_rFvOyLGSD6QWNycw=s88-c-k-c0x00ffffff-no-rj) ### [@johnashley3612](http://www.youtube.com/@johnashley3612) [3 hours ago](http://www.youtube.com/watch?v=WE_Gnowy3uw&lc=Ugz_s7d8b6bdJO7LHMJ4AaABAg) Love the honest “warts an’ all” view. No human slop here! I must rewatch! Show less Read more Like Dislike Reply ![Image 19](https://yt3.ggpht.com/ytc/AIdro_nSqmO2ewQ3pZtKuDnxLP6sqdNeIPfa02cDMdJoKIenO7Q=s88-c-k-c0x00ffffff-no-rj) ### [@livethumos](http://www.youtube.com/@livethumos) [10 hours ago](http://www.youtube.com/watch?v=WE_Gnowy3uw&lc=UgxvHk0C7UY5cm7yrMR4AaABAg) I love this channel Show less Read more Like 5 Dislike ![Image 20](https://yt3.ggpht.com/ajVemEB89DAOemsbfuMY6ZOWXJAACx3cbty9z21jeqRKODaVkDBSRun1b1xfQJljEsziOWS_Mg=s88-c-k-c0x00ffffff-no-rj) ❤ by @aiDotEngineer Reply ![Image 21](https://yt3.ggpht.com/ytc/AIdro_kQnWSAD6Gm3-wtlJwdGQ5jT55-cFBUBsNuleFX8xZm76T3ar1J01mTypF-cd73dN1eDg=s88-c-k-c0x00ffffff-no-rj) ### [@DomBelcastro-d8p](http://www.youtube.com/@DomBelcastro-d8p) [10 hours ago (edited)](http://www.youtube.com/watch?v=WE_Gnowy3uw&lc=UgzugC3Zxtoa18ioKpZ4AaABAg) Interesting decision, but wouldn't this skill based approach require more operational overhead (maintaining evals and training models) than the previous 12k lines of code. Show less Read more Like 3 Dislike Reply 4 replies Hide replies 4 replies ![Image 22](https://yt3.ggpht.com/LDt4RCis5t8Zp7hs4WrR_tMqMgDYUB49vnLWwXvamh0V42FZ92P9RHry5UvqTgfW0s73L8LBeiE=s88-c-k-c0x00ffffff-no-rj) ### [@agenticghost](http://www.youtube.com/@agenticghost) [27 minutes ago (edited)](http://www.youtube.com/watch?v=WE_Gnowy3uw&lc=UgyhBX0IxX5WpdJkOuZ4AaABAg) Why not keep it deterministic that agents can only operate in their own worktrees? Prompt engineering as alternative and hope the model follows your instructions is a severe regression, choicewise. Show less Read more Like Dislike Reply ![Image 23](https://yt3.ggpht.com/M4SCyVu__IL2DGDd-iRZHyxe1IuwYdTK77lokR7wcszN0H5i0bKD-b2NePDY4p83KNDCSzwEUQ=s88-c-k-c0x00ffffff-no-rj) ### [@blaster_pro](http://www.youtube.com/@blaster_pro) [7 hours ago (edited)](http://www.youtube.com/watch?v=WE_Gnowy3uw&lc=Ugyvj0ffQZ7XFKQQOcl4AaABAg) correction, on Cursor company you do not train your model , you fine tune from open source models and went a long road to hid this fact as best as you could that to pose as you were training it and not sharing credits Show less Read more Like 2 Dislike Reply Top is selected, so you'll see featured comments ## Comments 9 [Top Show featured comments](http://www.youtube.com/watch?v=WE_Gnowy3uw)[Newest Show recent comments, including potential spam](http://www.youtube.com/watch?v=WE_Gnowy3uw) ## In this video Transcript ## Key moments [![Image 24](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Introduction and the concept of markdown as code #### Introduction and the concept of markdown as code 0:14](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=14s) #### [Introduction and the concept of markdown as code](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=14s) 0:14 [![Image 25](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Recap of Git work trees in Cursor #### Recap of Git work trees in Cursor 0:59](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=59s&pp=0gcJCREDDuyUWbzu) #### [Recap of Git work trees in Cursor](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=59s&pp=0gcJCREDDuyUWbzu) 0:59 [![Image 26](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Complexity of the initial implementation #### Complexity of the initial implementation 3:10](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=190s) #### [Complexity of the initial implementation](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=190s) 3:10 [![Image 27](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Deleting 15,000 lines of code #### Deleting 15,000 lines of code 4:18](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=258s) #### [Deleting 15,000 lines of code](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=258s) 4:18 [![Image 28](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Implementing features with Skills and Sub-agents #### Implementing features with Skills and Sub-agents 4:54](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=294s) #### [Implementing features with Skills and Sub-agents](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=294s) 4:54 [![Image 29](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### How the new Skills are structured #### How the new Skills are structured 5:51](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=351s) #### [How the new Skills are structured](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=351s) 5:51 [![Image 30](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### New Slash commands and workflow #### New Slash commands and workflow 7:58](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=478s) #### [New Slash commands and workflow](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=478s) 7:58 [![Image 31](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Pros of the new implementation #### Pros of the new implementation 9:58](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=598s) #### [Pros of the new implementation](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=598s) 9:58 [![Image 32](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Cons and user feedback challenges #### Cons and user feedback challenges 12:15](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=735s) #### [Cons and user feedback challenges](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=735s) 12:15 [![Image 33](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Future improvements: Evals and RL training #### Future improvements: Evals and RL training 14:17](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=857s) #### [Future improvements: Evals and RL training](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=857s) 14:17 [![Image 34](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### What's next for Cursor 3.0 and native work trees #### What's next for Cursor 3.0 and native work trees 17:05](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=1025s) #### [What's next for Cursor 3.0 and native work trees](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=1025s) 17:05 Sync to video time ## Description Cursor Worktrees: Deleting 12K LoC Code with 200 LoC Skills — David Gomes David Gomes shows how Cursor replaced a heavyweight WorkTrees feature with a lightweight layer built from skills, commands, and subagents. He walks through how parallel coding workflows were recreated with roughly 200 lines of Markdown, plus the tradeoffs, failure modes, and lessons that come with moving product behavior from code into prompts. Speaker info: * [https://x.com/davidgomes](https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqa1NKYlo0T0F2Q2pFVTZyTkFGSkRBSEp0VG5Id3xBQ3Jtc0tsb2E2WEpDUkloMjRSRWl6ZTU0OXI5MGwwWkVDaTlPZ0RyNDQ1ZWhmOC11NnlkNnhUTXUwRUhVX1BUQ0FlbFFkSmZtNDc2aTh5cjVzMjBTSkVCaVQwSlJCYXRBVEZQM0QxcngtLVROMUdfN2d6NFJNZw&q=https%3A%2F%2Fx.com%2Fdavidgomes&v=WE_Gnowy3uw) * [https://github.com/davidgomes/](https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbWYyX3JWMTlrT2lHTXQ5dUtqV2J1UEhLOTVNUXxBQ3Jtc0tsWlhlV1Rfcm1hQ1p4dFJhZzVTbHl2Q0tLM1dnSlhLTkZyRUFIV0pod09rQnlqZU9VX1ZxUmVnbFlJVDlBVU1nS2JkQmN0am1tUlF1YUY3S0VNYU91UExvMlc4WFpsbDZXaXJQdTh0djJzUXBiNXcwdw&q=https%3A%2F%2Fgithub.com%2Fdavidgomes%2F&v=WE_Gnowy3uw) Timestamps [0:14](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=14s) Introduction and the concept of markdown as code [0:59](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=59s) Recap of Git work trees in Cursor [3:10](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=190s) Complexity of the initial implementation [4:18](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=258s) Deleting 15,000 lines of code [4:54](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=294s) Implementing features with Skills and Sub-agents [5:51](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=351s) How the new Skills are structured [7:58](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=478s) New Slash commands and workflow [9:58](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=598s) Pros of the new implementation [12:15](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=735s) Cons and user feedback challenges [14:17](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=857s) Future improvements: Evals and RL training [17:05](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=1025s) What's next for Cursor 3.0 and native work trees…...more ...more Show less How this was made Auto-dubbed Audio tracks for some languages were automatically generated. [Learn more](http://support.google.com/youtube/answer/15569972?hl=en) ## Key moments View all [![Image 35](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Introduction and the concept of markdown as code #### Introduction and the concept of markdown as code 0:14](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=14s) #### [Introduction and the concept of markdown as code](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=14s) 0:14 [![Image 36](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Recap of Git work trees in Cursor #### Recap of Git work trees in Cursor 0:59](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=59s) #### [Recap of Git work trees in Cursor](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=59s) 0:59 [![Image 37](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Complexity of the initial implementation #### Complexity of the initial implementation 3:10](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=190s) #### [Complexity of the initial implementation](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=190s) 3:10 [![Image 38](http://www.youtube.com/watch?v=WE_Gnowy3uw) #### Deleting 15,000 lines of code #### Deleting 15,000 lines of code 4:18](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=258s) #### [Deleting 15,000 lines of code](http://www.youtube.com/watch?v=WE_Gnowy3uw&t=258s) 4:18 Transcript Follow along using the transcript. Show transcript [![Image 39](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### AI Engineer 437K subscribers](http://www.youtube.com/@aiDotEngineer) [Videos](http://www.youtube.com/channel/UCLKPca3kwwd-B59HNr-_lvA/videos)[About](http://www.youtube.com/channel/UCLKPca3kwwd-B59HNr-_lvA/about) ## Transcript NaN / NaN Chat Replay is disabled for this Premiere. [![Image 40](https://i.ytimg.com/vi/96jN2OCOfLs/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLBZdp1cX62GE_0F_7p8NNyecd0HIQ) 29:49](http://www.youtube.com/watch?v=96jN2OCOfLs&pp=ugUEEgJlbg%3D%3D) ![Image 41](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Andrej Karpathy: From Vibe Coding to Agentic Engineering](http://www.youtube.com/watch?v=96jN2OCOfLs&pp=ugUEEgJlbg%3D%3D) Sequoia Capital 276K views • 1 day ago New [![Image 42](https://i.ytimg.com/vi/-QFHIoCo-Ko/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLAjqfhVXCym1J3M1Q5FFsmLv37FBg) 1:36:30](http://www.youtube.com/watch?v=-QFHIoCo-Ko&pp=ugUEEgJlbg%3D%3D) ![Image 43](http://www.youtube.com/watch?v=WE_Gnowy3uw) ![Image 44](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Full Walkthrough: Workflow for AI Coding — Matt Pocock](http://www.youtube.com/watch?v=-QFHIoCo-Ko&pp=ugUEEgJlbg%3D%3D) AI Engineer and Matt Pocock 252K views • 6 days ago New [![Image 45](https://i.ytimg.com/vi/cVzf49yg0D8/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLBX2SfpltEfRr4rXCWX9QdhZ7jT3g) 1:47:34](http://www.youtube.com/watch?v=cVzf49yg0D8&pp=ugUEEgJlbtIHCQnfCgGHKiGM7w%3D%3D) ![Image 46](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [[Full Workshop] Building Conversational Agents — Thor Schaeff and Philipp Schmid, Google DeepMind](http://www.youtube.com/watch?v=cVzf49yg0D8&pp=ugUEEgJlbtIHCQnfCgGHKiGM7w%3D%3D) AI Engineer 2.4K views • 8 hours ago New [![Image 47](https://i.ytimg.com/vi/xmkSf5IS-zw/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLAhYxJtTkwgBGvlbXSHSit0X390ZQ) 2:13:41](http://www.youtube.com/watch?v=xmkSf5IS-zw) ![Image 48](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [How GPT-5, Claude, and Gemini are actually trained and served – Reiner Pope](http://www.youtube.com/watch?v=xmkSf5IS-zw) Dwarkesh Patel 129K views • 1 day ago New [![Image 49](https://i.ytimg.com/vi/d53Zk28esmU/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLBp8jEO5NWts53tS_LYX_WcJmDZeg) 5:59](http://www.youtube.com/watch?v=d53Zk28esmU) ![Image 50](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [GitHub is having some major issues right now…](http://www.youtube.com/watch?v=d53Zk28esmU) Fireship 345K views • 7 hours ago New [![Image 51](https://i.ytimg.com/vi/JNyuX1zoOgU/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLDn0yBys-Of1HHHC6hqYyutUUpWPg) 40:57](http://www.youtube.com/watch?v=JNyuX1zoOgU&pp=ugUHEgVlbi1VUw%3D%3D) ![Image 52](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Demis Hassabis: Agents, AGI & The Next Big Scientific Breakthrough](http://www.youtube.com/watch?v=JNyuX1zoOgU&pp=ugUHEgVlbi1VUw%3D%3D) Y Combinator 73K views • 1 day ago New [![Image 53](https://i.ytimg.com/vi/bBS93A0BeNI/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLAdkVmMqX4LCrD--YEYU7cv_smeug) 28:27](http://www.youtube.com/watch?v=bBS93A0BeNI&pp=ugUEEgJlbg%3D%3D) ![Image 54](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [OpenAI's Greg Brockman: Why Human Attention Is the New BottleneckOpenAI's](http://www.youtube.com/watch?v=bBS93A0BeNI&pp=ugUEEgJlbg%3D%3D) Sequoia Capital 5.9K views • 6 hours ago New [![Image 55](https://i.ytimg.com/vi/aEL384kTznk/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLCr89o8gfPvk-vcGkREjJmOm-NOEw) 8:34](http://www.youtube.com/watch?v=aEL384kTznk) ![Image 56](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [I Quit My GitHub Job Because AI Breaks Software](http://www.youtube.com/watch?v=aEL384kTznk) Zen van Riel 72K views • 2 weeks ago [![Image 57](https://i.ytimg.com/vi/fLUtUkqYHnQ/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLDzrqaoEdHLMz4hpJBU-z2peY8O7A) 20:13](http://www.youtube.com/watch?v=fLUtUkqYHnQ&pp=ugUEEgJlbg%3D%3D) ![Image 58](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Everything I Learned Training Frontier Small Models — Maxime Labonne, Liquid AI](http://www.youtube.com/watch?v=fLUtUkqYHnQ&pp=ugUEEgJlbg%3D%3D) AI Engineer 14K views • 1 day ago New [![Image 59](https://i.ytimg.com/vi/3MP8D-mdheA/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLAEYdMaTTgekSgb-6Dz5dv-70IiCQ) 11:19](http://www.youtube.com/watch?v=3MP8D-mdheA&pp=ugUEEgJlbg%3D%3D) ![Image 60](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [How To De-Slop A Codebase Ruined By AI (with one skill)](http://www.youtube.com/watch?v=3MP8D-mdheA&pp=ugUEEgJlbg%3D%3D) Matt Pocock 46K views • 1 day ago New [![Image 61](https://i.ytimg.com/vi/v4F1gFy-hqg/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLCd08R5OZiXI3579qZ8XJrdyjcTEA) 18:26](http://www.youtube.com/watch?v=v4F1gFy-hqg&pp=ugUEEgJlbg%3D%3D) ![Image 62](http://www.youtube.com/watch?v=WE_Gnowy3uw) ![Image 63](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### ["Software Fundamentals Matter More Than Ever" — Matt Pocock](http://www.youtube.com/watch?v=v4F1gFy-hqg&pp=ugUEEgJlbg%3D%3D) AI Engineer and Matt Pocock 434K views • 7 days ago [![Image 64](https://i.ytimg.com/vi/t-DM44d-qhU/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLAQSVRGW1xzqP8yRERkfIUqXLWSUA) 23:58](http://www.youtube.com/watch?v=t-DM44d-qhU&pp=0gcJCd8KAYcqIYzv) ![Image 65](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [GitHub is falling apart.](http://www.youtube.com/watch?v=t-DM44d-qhU&pp=0gcJCd8KAYcqIYzv) ForrestKnight 21K views • 9 hours ago New [![Image 66](https://i.ytimg.com/vi/tS_fJJxMjn4/hqdefault.jpg?sqp=-oaymwEmCKgBEF5IWvKriqkDGQgBFQAAiEIYAdgBAeIBCggYEAIYBjgBQAE=&rs=AOn4CLDIHT7KmccT7EwefFRLf7P_jCFe7g) 15:16](http://www.youtube.com/watch?v=tS_fJJxMjn4&pp=ugUEEgJlbtIHCQnfCgGHKiGM7w%3D%3D) ![Image 67](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [🚗 BYD : The biggest SCAM of the car industry ?](http://www.youtube.com/watch?v=tS_fJJxMjn4&pp=ugUEEgJlbtIHCQnfCgGHKiGM7w%3D%3D) Statrys 7.2M views • 13 days ago [![Image 68](http://www.youtube.com/watch?v=WE_Gnowy3uw) 1:04:45](http://www.youtube.com/watch?v=antJCYNLZbE&pp=ugUHEgVlbi1VUw%3D%3D) ![Image 69](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Prof John Mearsheimer: We've Lost the Iran War, We're Screwed](http://www.youtube.com/watch?v=antJCYNLZbE&pp=ugUHEgVlbi1VUw%3D%3D) Daniel Davis / Deep Dive 131K views • Streamed 7 hours ago New [![Image 70](http://www.youtube.com/watch?v=WE_Gnowy3uw) 25:39](http://www.youtube.com/watch?v=_fQ7Z_Wfouk&pp=ugUEEgJlbg%3D%3D) ![Image 71](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Why building eval platforms is hard — Phil Hetzel, Braintrust](http://www.youtube.com/watch?v=_fQ7Z_Wfouk&pp=ugUEEgJlbg%3D%3D) AI Engineer 5.4K views • 2 days ago New [![Image 72](http://www.youtube.com/watch?v=WE_Gnowy3uw) 2:18:44](http://www.youtube.com/watch?v=RCbJKkG_mZs&pp=0gcJCd8KAYcqIYzv) ![Image 73](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Anthropic Makes Deals w/ Amazon & Google, AI Beats Doctors, and Math Is Cooked | EP #252](http://www.youtube.com/watch?v=RCbJKkG_mZs&pp=0gcJCd8KAYcqIYzv) Peter H. Diamandis 37K views • 7 hours ago New [![Image 74](http://www.youtube.com/watch?v=WE_Gnowy3uw) 11:25](http://www.youtube.com/watch?v=E5-QK3CDVQM&pp=ugUEEgJlbg%3D%3D) ![Image 75](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [I Open-Sourced My Own AFK Software Factory](http://www.youtube.com/watch?v=E5-QK3CDVQM&pp=ugUEEgJlbg%3D%3D) Matt Pocock 20K views • 10 hours ago New [![Image 76](http://www.youtube.com/watch?v=WE_Gnowy3uw) 1:01:59](http://www.youtube.com/watch?v=MhHEGMFCEB0&pp=ugUEEgJlbg%3D%3D) ![Image 77](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [OpenAI Codex Masterclass — Vaibhav Srivastav & Katia Gil Guzman](http://www.youtube.com/watch?v=MhHEGMFCEB0&pp=ugUEEgJlbg%3D%3D) AI Engineer 9.1K views • 1 day ago New [![Image 78](http://www.youtube.com/watch?v=WE_Gnowy3uw) 1:03:20](http://www.youtube.com/watch?v=G_bHFmEAarM&pp=ugUEEgJlbg%3D%3D) ![Image 79](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Build & deploy AI-powered apps — Paige Bailey, Google DeepMind](http://www.youtube.com/watch?v=G_bHFmEAarM&pp=ugUEEgJlbg%3D%3D) AI Engineer 2.9K views • 1 day ago New [![Image 80](http://www.youtube.com/watch?v=WE_Gnowy3uw) 41:09](http://www.youtube.com/watch?v=dxq7WtWxi44&pp=ugUEEgJlbg%3D%3D) ![Image 81](http://www.youtube.com/watch?v=WE_Gnowy3uw) ### [Karpathy's Wiki vs. Open Brain. One Fails When You Need It Most.](http://www.youtube.com/watch?v=dxq7WtWxi44&pp=ugUEEgJlbg%3D%3D) AI News & Strategy Daily | Nate B Jones 91K views • 8 days ago Show more [](http://www.youtube.com/watch?v=WE_Gnowy3uw)