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Moeda: aula de probabilidade, não um veredito

Depois de muitas caras, a próxima segue cerca de 1/2.

Independence

Past fair tosses do not change the next probability. Ten heads still leave about 1/2 (fair model). The feeling that balance must be restored is the error.

Streaks and patterns

HHH is 1/8; HTH is also 1/8. A pretty pattern is not rarer. Same illusion as lottery number shapes.

Physical bias

Worn rims, a pre-spun wrist, dropping instead of catching. Labs have reported small face bias. That is not casino-grade RNG. The toy below is browser randomness for play.

Split from the oracle

The yes/no oracle is a decorated question toy. This page is a probability lesson. Neither verdicts destiny. Do not stop a drug or sign a contract on a coin.

Odds table and a play toss

One heads1/2
HHH1/8
HTH1/8
Both same1/2

Past tosses do not change the next 1/2.

Related

Oráculo sim/não: um lanceDado: de um a seis, não um cubo do destinoOdds da loteria: combinatória honestaExplore

FAQ

If heads ran hot, is tails due?
No. Fair next toss stays about 1/2. Gambler’s fallacy.
Same as the yes/no oracle?
No. That page is a toy; this is a probability explainer.
Are real coins perfect?
Tiny bias is possible. The ideal model is 1/2.
Use it for big decisions?
Not for medicine, law, or money. Entertainment.

For entertainment and cultural context. Dreams, coins, and dice are not prediction, finance, or medical advice.

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