Hairy, smelly, none too bright and likely to die before he hits 40 Neanderthal man seems a dubious role model for the modern husband. So its curious that we keep looking back 30,000 years for clues as to how men tick. For a long time, biological determinism stated that men couldnt help being rubbish at domesticity: they had evolved to be good at hunting, not Hoovering. We ladies were asked to be forbearing when they communicated in grunts or left a trail of dirty socks. The poor things were in the grip of their inner caveman.