# Puzzles vs Mysteries A puzzle can be solved, or at least you’re pretty sure it can be solved. Most puzzles have been solved before. A mystery is a puzzle that can’t be solved, or at least it’s unknown whether it can be solved. Source: [[robertsJacobsSolvingLife]] <!-- #mental-model --> [Web URL for this note](http://notes.benjaminreinhardt.com/Puzzles+vs+Mysteries) [Comment on this note](http://via.hypothes.is/http://notes.benjaminreinhardt.com/Puzzles+vs+Mysteries) <!-- {BearID:30ECC1D7-4389-4125-8E04-DC5A883A9439-732-00000F71E69F3B50} -->