Isaac Newton sat under a tree and had an apple fall on his head, thus the theories about gravity. But maybe we should be more concered about how the apple affected him. Why didn’t he sit under a tree that didn’t bear huge fruits that could be potentially harmfull to his health. Is it possible that there isn’t even such a thing as gravity? Maybe the force that holds us to the Earth is held deep within the Earth. The next time you throw a rock staight up into the sky, don’t count on it coming back down.