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4 chapters
Under the Hood
What everyday tools are actually doing when you are not looking.
#1 Jan 2026 The Art of High-Quality Compression AV1 cuts video file sizes by ~50% with no visible quality loss. #2 Mar 2026 Andrej Karpathy's 200-line GPT implementation Turns out intelligence at its core is simpler than you'd expect. #3 Jun 2026 What Git Is Actually Doing You probably haven't bothered to understand git. You should. Probably. #4 Sep 2026 What SQLite Is Actually Doing It's one file, a pile of 4 KB pages, and a few B-trees. Open it up and see how SQLite stores, finds, and safely writes your data.