Linux kernel is 40 million lines of code
The Linux kernel is approximately 40 million lines of code, making it one of the most complex software systems ever created.
Snapshot · Lex Fridman Podcast
#501 – DHH: Future of Programming, AI, Agentic Engineering, Vibe Coding & Linux
Explore episode
Aug 26, 2026
Where this was said
Future of programming
At 4:05:03 · chapter starts 4:04:25
The conversation reaches its most philosophical and lyrical point here. DHH's insight that he became a programmer because he wanted programs — not because he loved if statements — reframes his entire career. He fell in love with programming as a craft for two decades, but the original motivation was always the output: things that didn't exist that he wanted to bring into being. AI has collapsed the distance between desire and manifestation to almost nothing. The Picasso parallel is extended and well-chosen: Picasso trained in realistic painting before inventing Cubism. He didn't mourn that he was no longer depicting apples photographically; he was excited about depicting apples as squares. DHH sees the same liberation in moving from hand-crafted Ruby to natural-language direction. His argument about non-determinism is subtle but important: the same prompt not producing the same output is not a flaw — it's what makes AI feel alive, creative, and human. Anyone who wishes AI were fully deterministic is wishing away its most human quality.
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