Decision traps
Patterns that hijack a clean decision into a costly one.
Not biases of belief — biases of action. These traps describe how a perfectly sensible person ends up choosing the worse option: framing, anchoring, the pull of sunk costs, the comfort of defaults.
The other 7 types of glitch.
Systematic errors in judgment, baked into how the brain weighs evidence.
How memory rewrites itself — distortions, false confidence, fading detail.
What other people's presence, opinions, and signals do to your thinking.
Glitches in how you think about your own thinking.
Where the eyes (or attention) lie before the brain even gets a vote.
Argument moves that look like reasoning but skip a step.
Mental shortcuts — fast, often right, occasionally catastrophic.
Train against all 231 of them.
The reference is free. Buyers unlock the interactive training — Spot-the-Bias Quiz unlimited, Swipe Deck with spaced repetition, My Blindspots, Decision Pre-Flight, the Field Guide e-book, Cheat Sheets, and the Printable Deck. $29.50$59.