Meme theory has been attracting much attention in recent years. Pioneered by Richard Dawkins and Daniel Dennett it suggests that there are self-replicating units of culture analogous to genes. Like genes these 'memes' seek to copy themselves as widely as possible. One of them may be war. Memetics remains in its infancy but the truly sobering aspect is that 'fitness of purpose' for a meme may have little to do with the biological fitness of the people who are 'programmed' by it; it simply evolves because it is advantageous for itself.