Have you read "The 10,000 Year Explosion"? Cochran & Harpending (and Hawks and some others in the paper its based on) argue that evolution has accelerated recently. The reason is that there is a larger population, so more new mutations to be selected. Also, because our environment is not a steady state our genes don't reach a steady state either (like horseshoe crabs or a number of other species). I've only read a bit past the first chapter, but it would seem relevant to your claim.