Debunked

The casino profits from misconceptions. Every myth below has been disproven by math. The format: The Myth → The Math → The Verdict.

01BUSTED

The "Third Base" Myth

The Belief:

"The last player to act (third base) can 'save' or 'kill' the table by making bad decisions."

The Math:

One player's decisions have zero impact on your long-term EV. The cards are random. What matters is the probability distribution of the remaining deck, not the order in which cards are drawn.

EV(your hand) ≠ f(other_player_actions)
02BUSTED

"Insurance is for Suckers"

The Belief:

"Insurance is a 'safety bet' that protects against the dealer's blackjack."

The Math:

Insurance pays 2:1 but the true odds of the dealer having blackjack are ~9:4. This creates a house edge of 7.4% on the insurance bet alone. It's a separate sucker bet, not protection.

EV(insurance) = (16/49 × 2) - (33/49 × 1) = -0.0204 (-7.4%)
03BUSTED

The "Hot Streak" Fallacy

The Belief:

"I'm on a hot streak—time to increase bets!" or "The table is cold—walk away."

The Math:

Each hand is an independent event (assuming reshuffling). Past outcomes have no predictive power. The Gambler's Fallacy is a cognitive bias, not a strategy.

P(win|previous_losses) = P(win) = 0.423 (independent events)

How to Use This Section

1

The Myth

The belief that circulates at tables and in forums. Often sounds logical. Never is.

2

The Math

The probability distribution that disproves it. With code-block notation where relevant.

3

The Verdict

BUSTED. Always. The math doesn't negotiate.

Weekly EV Challenge

A complex hand scenario posted weekly. What's the EV difference between the two best options?

This Week's Challenge

Pair of 8s. Dealer shows 10. H17 table. Split or Surrender?

EV(Split) vs EV(Surrender) = ?

Answer submissions coming soon.

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The Double Down

Weekly deep dives into one specific fallacy. The Myth. The Math. The Verdict.

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