Karpathy second brain graph

by Vojtech: Andrej Karpathy

You’ve crushed 200 articles this year and can barely recall 5. Not a memory problem, those pieces had no place to land. Karpathy’s second-brain setup catches everything. Drop an article, PDF, or transcript into a single folder and Claude atomizes it into linked notes, connecting each to what you already saved. Nothing sits alone; every new source sharpens the whole vault. Instead of digging, you just ask and pull answers from everything at once. Three folders and one config file, you’re live before your coffee finishes brewing. No more cold starts, every session builds on everything you know.