The dominant model for publishing knowledge online has not changed much since the early 2000s: write something, polish it, publish it, move on. Blog posts are finished when they are published. That model creates a hidden cost. The knowledge that does not make it into a finished piece — the half-formed ideas, the developing hypotheses, the notes that are useful but not polished — stays private. Publicly, you appear to know only what you have been willing to finalize and ship. Digital garden...