I’ll give you a theory: Man’s closest relative is not the chimpanzee, as the TV people believe, but is, in fact, the dog.
Witness my logic:
Case-in-Point #1: The Dew Claw
It is my opinion that the so-called dew claw, which is often snipped off a dog’s foreleg at an early age, is actually evidence of a preemergent thumb. Further, I believe that men have systematically bred the thumb out of certain lines of dog through an elaborate process called “selective breeding,” simply in order to prevent dogs from evolving into dexterous, and therefore “dangerous,” mammals.
I also believe that man’s continued domestication (if you care to use that silly euphemism) of dogs is motivated by fear: fear that dogs, left to evolve on their own, would, in fact, develop thumbs and smaller tongues, and therefore would be superior to men, who are slow and cumbersome, standing erect as they do. This is why dogs must live under the constant supervision of people, and are immediately put to death when found living on their own.