But classical probability does not accurately capture the behaviour, so it is described as irrational. Many similar violations of classical probability rules have been observed in cognitive science.

On an everyday level, it might seem that human behaviour is not consistent because it often violates the rules of classical probability theory. However, this behaviour does appear to fit with the way ...

Rather than providing a description of the world, the rules of quantum mechanics are an addition to the standard probability rules; to classical (non-quantum) decision theory.