Inventory of knowledge components.

  • Concept/definition: x is determined by y characteristics.
  • Argument: x ought to be the case under y circumstances because of z principles.
  • Counter-argument: x actually ought not be, under y conditions.
  • Model: x is like y in z ways. (Analogies.)
  • Theory/hypothesis: Given x conditions, y is predicted to occur with z probability.
  • Fact/phenomenon/empirical data: x is true due to y evidence from z source.


  1. Imaginary-Unit-3267, “How, Exactly, Is Structure Supposed to ‘Emerge’?,” Reddit Comment, R/Zettelkasten, March 26, 2022, (See notes.)