Re:The answer is easy (Score 1)

Jack, I think you may be making a logical fallacy here yourself. If we assume that evolution has created increased complexity in living creatures, and further assume that intelligence is (at the very least) not possible below a certain level of complexity, then the fact that humans are the first intelligent species is not an anomaly. We were simply the first to get over the intelligence threshold. That makes us no more of an anomaly than the first patch of snow you see in summer while hiking up the side of a mountain. It may be the first, but there's more to come.

Of course, the only way to really check this theory is to take a nap, wake up in another couple hundred million years, and see if there are now more than one intelligent species on the planet.