A GUY IN BERLIN READ ONE KARPATHY TWEET AT MIDNIGHT. BY MORNING HIS OBSIDIAN HELD 2,847 LINKED NOTES, NONE OF WHICH HE HAD WRITTEN16.2 million views on the original post. 47 sources in a week. 0 empty chats since that nightopens Claude Code, points it at an empty Obsidian folder. Pastes Karpathy's wiki idea. Claude builds three folders: raw for sources, wiki for its pages, a CLAUDE.md that runs everything. Drops an article into raw, a lecture transcript, a PDFtypes ingest this. Claude reads, tag