Popular trading beliefs, run through the real machinery.

Each piece below takes something the retail trading industry sells — a strategy, a statistic, a story — and runs it through the same validation gauntlet we apply to our own ideas: permutation tests, out-of-sample splits, honest sample sizes. Most things don't survive. Including, frequently, ours: most ideas die in research before ever becoming a play, and the full plays that stop working are killed in public — 24 so far.