Sir Isaac Newton discovered gravity. True. Fact. Another interesting fact: his hair did not. His glorious mane, floating through time and space, surrounding his head like angels on a cloud, remained gravity-free until his death in 1727. Perhaps his gravity-less hair was a key factor to his discovery. Perhaps it gave him insight as he studied the world. He could see that everything on Earth seemed to be weighed down by an invisible force... except of course, his own hair. Certainly his glorious mane, as the exception to the rule, guided him in his work.