Two accomplices are interrogated separately: betray or stay silent? If neither knows what the other will do, their choice breaks the classical rule of probability. It’s like riding an old bicycle over bumps — the hard seat jolts you off. The textbook rule, the classical model, fails. The authors of a new study found a simple fix: the cyclist needs a soft saddle. It’s enough to assume that the prisoners aren’t fully confident about their partner’s actions — just a guess, which varies from person to person. This measure of doubt, entropy, acts as a shock absorber. Once you hit the road with an adjustment for uncertainty, the classical model stops sputtering. Any tricky result that was attributed to quantum logic can be replicated on this rickety but reliable bicycle. As it turns out, quantum purists spent years insisting on complexity, while the secret was hiding in plain human indecision. Cosmic dust of doubt doesn’t ruin the theory — it reminds us that in life we rarely act with one hundred percent certainty. The old bicycle rolls on, if you give it a little give.