Umm..... Well.... Class, can anyone tell me why animals have tails? Because it's used for balance in high speed. Maybe one day a human will completely be reingineered to resemble something like a cat or a monkey. It's just the freaky science way of wanting better and easier life. If one had a tail, that person could run faster and be able to kneel more aero-dynamically. If one had cat ears, that would allow 360 degree sound detection. And even more, If one had cat eyes, that would allow more vision with less light. It's kind of scary but this sounds like it would make a human biologically... better than a normal human. Anyone see my point?