If you are willing to accept that there are generally two branches of complex organisms (vertebrates and invertebrates), further accept that there are three primary forms of rock (igneous, metamorphic, and sedimentary), and that all scientific proof backs up the supposition that rock takes a long time to form, then evolution is a theory only in name. No human bones have ever been found any deeper than the most superficial of layers of rock. The deeper you go into rock, the more you find a pattern emerge: vertebrates exist only in the most recently formed rock, whereas invertebrates can be found much, much deeper and further back in time. In itself, this is proof of evolution; that creatures around today evolved from a different form more distantly in the past. Having a sample of your DNA will quickly go so far as to prove where you evolved from even more recently. But let's delve a little more into the more immediately observable. There are sightless spiders in deep, dark caves