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Guides

One big question, worked through properly.

Each guide takes a question traders ask about testing a strategy and goes all the way: the reasoning, the warning signs and what to check. Plain English, with drawn examples.

The first guide

GuideReal edge or luck6 min read

Real edge or just luck? How to tell if your backtest is overfit

A great backtest can still be luck. Here’s how overfitting happens, the warning signs to look for, and six checks that separate a real edge from a lucky fit.

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