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What an edge actually is

The Math of an Edge

Not a secret, a small persistent tilt

An edge is not a setup nobody knows about. It's any repeatable process whose expectancy is positive after costs — often by a margin so small it's invisible in any individual trade. Casinos run on a 2% house edge and it is enough, because they get the sample size. Your edge might be that you only take one setup, you always size the same, and you never trade the first ten minutes. Boring, unglamorous, and mathematically identical to the casino's position.

Check yourself

An edge is best described as…

  1. A setup nobody else knows
  2. A repeatable process with positive expectancy after costs correct
  3. A high win rate

The casino's edge is public, tiny, and unbeatable over enough hands. Repeatability and sample size do the work, not secrecy.

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