second brains

Either physical or digital catalogues of thoughts and insights by a single person


  • Like knowledge graphs by one single person
  • How are connections possible from the strictly one-perspective (eg blogs) to the strictly multi-perspective (eg wikis)
  • fleeting notes vs carefully constructed prose
  • atomic notes, thematic links, taxonomy and categorisation
  • external cognition, philosophical implications
  • memex - “an enlarged intimate supplement to his memory” - Vannevar Bush, As We May Think
  • “exocortex” - Hamish MacDonald