Leonardo da Vinci was enthralled by flying, so much so that he sketched flying machines, which were indeed ahead of their time, but if they had been built, they probably never would have flown in real life. What is the main error in this sentence?
Kites have been important to the invention of flight as they were the Leonardo da Vinci made the first real studies of flight in the 1480's. ... He changed the shape of the wings so that the air would flow over the wings correctly.
