The “Gambler’s Fallacy”: The Mental Trap That Costs Players Millions Every Year

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Most people who’ve ever placed a bet have felt it at some point. The roulette wheel lands on red five times in a row, and suddenly a little voice says, “Black must be due.” It feels logical. It feels almost mathematical. The problem is, it’s completely wrong, and that feeling costs people enormous amounts of money every single year.

What the Gambler’s Fallacy Actually Is

What the Gambler's Fallacy Actually Is (Image Credits: Flickr)
What the Gambler’s Fallacy Actually Is (Image Credits: Flickr)

The gambler’s fallacy, also known as the Monte Carlo fallacy or the fallacy of the maturity of chances, is the belief that if an event whose occurrences are independent has happened less frequently than expected, it becomes more likely to happen again in the future, or vice versa. In plain terms, it’s the mistaken idea that past random events can somehow influence future ones.

The gambler’s fallacy is a prevalent cognitive bias in betting behaviors, characterized by the mistaken belief that an independent random process exhibits negative serial correlation. This misconception often arises when individuals observe a series of realized outcomes from the process. In other words, the more times something happens in a row, the more convinced people become that the opposite outcome is “overdue.” That conviction, however, has no basis in probability.

The gambler’s fallacy is the belief that the probability of an event is lowered when that event has recently occurred, even though the probability of the event is…

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Author : Matthias Binder

Publish date : 2026-04-22 13:54:00

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