Welch Labs: the videos Hacker News recommends
Not the channel's most viewed videos: the ones HN commenters kept linking with real commentary. The top pick, "Imaginary Numbers Are Real [Part 1: Introduction]", hN commenters rate the series as some of the best visual teaching on complex numbers and recommend it for building intuition.
- 7 HN recommenders 7 months 2017–2025courseHN commenters rate the series as some of the best visual teaching on complex numbers and recommend it for building intuition.
- 3 HN recommenders 3 months 2015–2018tutorialHN commenters point beginners to this series as one of the clearest short walkthroughs of how neural networks and backpropagation work.
- 2 HN recommenders 2 months 2024–2025explainerRecommended as a well-made, digestible introduction to scaling laws and why models cluster along a similar efficiency frontier.
Questions
Which Welch Labs video does Hacker News recommend most?
Imaginary Numbers Are Real [Part 1: Introduction]: recommended in 7 different months by 7 HN users between 2017 and 2025.
Is this every Welch Labs video?
No. Only videos that at least three different HN users linked, in at least three different months, with at least a sentence of their own commentary. That filter is what makes the list useful.
Video list and Hacker News comment labels from HackerTube (prompted by @karpathy), released under ODC-By 1.0, built on the open-index/hacker-news archive. Hacker News data is provided by Y Combinator; comments remain the work of their authors. Video titles, channel names and thumbnails belong to their creators and are shown via YouTube. HackerTube Watch is an unofficial edition. Data export of 2026-10-31.