How come, when a man speaks, we hear one thing, and when a woman speaks, we hear quite another? Take Oscar Pistorius and Hilary Mantel. Nothing much in common, you’d think, except that both of them have made the news for things they did, or didn’t say. When the strange news broke about the tragedy at Pistorius’s house, a male friend said, ‘oh, he was obviously protecting himself against an intruder. South Africa, you know.’ Then, when we all caught…