AI by Hand: Tom Yeh's Substack Teaches ML Math via Pen-and-Paper Exercises

The page retrieved here is not an article but the subscription landing page for “AI by Hand ✍️,” a Substack newsletter run by Prof. Tom Yeh. The actual body content did not load — the site requires JavaScript — so only the masthead metadata is available: the newsletter covers the math, algorithms, and architectures behind AI worked out manually, and it lists more than 73,000 subscribers.

The premise implied by the title and tagline is a pedagogical one: rather than treating models as black boxes, the series walks through the underlying linear algebra and network mechanics by hand, the kind of pen-and-paper derivation used to build genuine intuition about how systems like transformers actually compute. That approach has found a sizable audience, which the subscriber count suggests.

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