@danfin04: Three doors. A car behind one, goats behind the other two. You pick door 1. The host, who knows what's behind every door, opens door 3 and shows you a goat. Two doors left. He asks if you want to switch. Most people say it makes no difference. Two doors, 50/50. Wrong. Switching wins 66.7% of the time. Here's why. Your first pick was right 1 in 3 times, and nothing that happened afterwards changed that. The other two doors held 2/3 between them. The host was never choosing randomly. He was always going to open a goat door, so opening one told you nothing about your own. He didn't split that 2/3 evenly. He pushed all of it onto the single door he deliberately left closed. He isn't offering you a coin flip. He's showing you where the car probably is. Swipe through for the full breakdown. #propfirm #trading #daytrading #math #quant

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2026-09-05 12:24:14

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