Why we dont fly?

Question

Why we dont fly when it is possible? (I am not talking about airplanes or stuff like that.)

Answer 1

well, the absence of wings would be the first issue, then of course our bone structure would have to change to accommodate them, then they would have to hollow out, our muscles would have to get lighter, and after all of that, we would probably have to adapt our lungs and air intake methods to adapt with the altitudes?(that part I'm not so sure about, its just a logical progression! ^_^)

Answer 2

because of GRAVITY????

Answer 3

no parts on our body can hold up the whole body.

building mucles would make you heavier

stop watching cartoons

Answer 4

We do fly, in spite of the fact that our power-to-weight ratio sucks. Low speeds, low wing loading, a bicycle mechainsm and an ultra light aircraft contributed to the success of several human-powered flights, including Dr. Paul MacReady's Gossamer Condor in 1977 and Gossamer Albatross in 1979, and the MIT Daedalus in 1988 (a 119 km flight!). See the ref.

If you're saying that we can fly with no mechanical apparatus, all I can say is good luck, and stay away from cliffs and tall buildings.

Answer 5

because our lift/drag ratio is too small, in any configuration of the human body. We can't produce enough thrust.

Answer 6

We don't as we can't fly!

Evolution did that to us.

Answer 7

becaz we hve no wings....our old inventer want to make it possible by useing artificial wings but our body are more heavy than wings so we can not fly....