- Occam's Razor: When faced with competing hypotheses, choose the one with the fewest assumptions.
- Sunk Cost Fallacy: What you've invested is irrelevant to whether you should continue investing.
- Dunning-Kruger Effect: The less competent someone is, the more they overestimate their competence.
- Hanlon's Razor: Never attribute to malice what can be explained by stupidity.
- Grice's Razor: In conversation, say only what is true, relevant, and clear.
- Hitchen's Razor: What can be asserted without evidence can be dismissed without evidence.
- The Arena Razor: Pay more attention to people who have skin in the game.