给人类按上翅膀 人类也该进化一下了

现在生物技术这么发达，人类也该主动进步一下了。
首先我们应该有一个翅膀，这样交通方便很多。
现在走路不再重要，所以下肢可以小一些。

Moden biotechnology should add a pair a wings to human's body. The first several generation wing might not able to fly, but finally we will have a wing can fly. The age human moved depends on leg should be over. We can simple be a 5 finger bird with a human brain.