China developer second brain Claude Kimi
A developer in China used Claude and Kimi to create a 'second brain.' While most people lean on AI for coding, Andrej Karpathy recommended a more ambitious use: building an externalized knowledge system. The setup is simple: drop any article, PDF, or transcript into a single folder. Claude or Kimi then reads it, links it, and files it into one connected Notion database. You can try it yourself:
