Poker Math

Poker is an argument settled in probabilities, and a handful of numbers decide most of it. Equity is your share of the pot right now; pot odds are the price you're being laid; expected value is what a decision is worth if you made it a thousand times. Master these and most “should I call?” questions answer themselves.

None of it is hard arithmetic. A pot-sized bet lays you 2-to-1, so you need to be good a third of the time; a flush draw is about a third to get there by the river. The skill isn't the calculation — it's the habit of comparing your equity to the price every single time, instead of calling because you “might be good.”

And the math points at a floor: a balanced opponent prices your river bluff-catchers so that calling and folding are worth exactly the same. That indifference — where the numbers run out and only the cards in your own hand move the needle — is where this pillar meets the force of Information.