Dennett and Thinking Evolutionarily

It is strange to me that I agree with the concept that evolution can be applied to multiple disciplines, yet I find Dennett's theory of memes far too simplified. He draws support for his idea from biologists, linguists, historians, and philosophers among others, creating an argument drawn from both the humanities and the sciences... but the idea of memes seems to reduce everything to a very boring formula. I feel that if what Dennett says is true, then we could reduce all human thought to mathematical equations. Life just isn't that simple.