Elephants would learn how to fly, as well as cows. ostriches would learn how to swim and whales would walk on land somehow. oh, and humans would have fingers for toes, and a new breed of squids that can swing like monkeys have have exceptional brainpower would roam the forests. and the monkeys would learn how to live underwater and swim like replacement squid and "the plants were singing and the birds and the sun was almost down from the top of the sky ?" then john freeman who is gordon freeman's brother would say "it's a good day to do what has to be done by me and help my brother defeat the enemys". and people would not be able to run, they'd only be able to walk REAL FAST