Table of Contents
Short, hands-on breakdowns of the math holding up everyday engineering. Pick a series below to start, new ones get added as they're ready.
01
Cosine Similarity
The angle between two vectors turns out to be the whole trick: it's how search engines, recommendation systems, and every embedding model decide what counts as similar.
02
The Leaky Bucket
A bucket with a hole in the bottom turns out to be a surprisingly good model for traffic control. One differential equation, and it's the algorithm standing between you and that 429 the next time you hammer an API.