anything that provides a plausible aid or direction in the solution of a problem but is in the final analysis unjustified, incapable of justification, and potentially fallible.

-Billy Vaughn Koen

Billy describes three different type of heuristics:

  1. Heuristics we use to solve a specific problem;
  2. Heuristics that guide our use of other heuristics (meta-heuristics, if you will);
  3. Heuristics that determine our attitude and behavior towards design or the world and the way we work.

On this site you will find these three different heuristics as collections under: