Your brain is amazing — but it also takes sneaky shortcuts that can trick you. Solve six real cases, catch each trick in the act, and earn your badges.
a case file requested by @dulanyw.bsky.social
What's a "bias"? A bias is when your brain jumps to a guess that feels true — but is actually built from only part of the story. It's not lying to you on purpose. It's just taking a shortcut, and shortcuts sometimes lead to the wrong place.
Real detectives don't trust the first easy answer. They ask: "What am I not seeing?" Six cases are open below. Read each one, pick your answer, and see if you can catch the trick before the reveal does.
Your badge tray — solve a case to fill a slot
You caught all six. That makes you a fully certified Bias Detective. Add your name and take your certificate with you.
A quick-reference sheet of every bias in this case file — no case-solving required, just the facts.