Mistake (criminal law)
(重定向自Mistake of fact)
A mistake of fact may sometimes mean that, while a person has committed the physical element of an offence, because they were labouring under a mistake of fact, they never formed the required mens rea, and so will escape liability for offences that require mens rea. This is unlike a mistake of law, which is not usually a defense; law enforcement may or may not take for granted that individuals know what the law is.