 Imagine that the accused is prosecuted for the crime of rape and the alleged victim’s behaviour (fact A) increases the probability that she had consented to have sexual intercourse with the accused (fact B). On the probabilistic theory of relevance that we have considered, A is relevant to B. Now suppose that the alleged victim is a minor. Under criminal law, it does not matter whether she had consented to the sexual intercourse. If B is of no legal consequence, the court will not allow evidence of A to be adduced for the purpose of proving B: the most obvious reason is that it is a waste of time to receive the evidence.