Case in point: Lilienthal, who wrote the aerodynamics book that inspired much of the wing building of the Wrights, died when he crashed with one of his gliders.

Case in point: Lilienthal, who wrote the aerodynamics book that inspired much of the wing building of the Wrights, died when he crashed with one of his gliders. Amazing book by the way, there was a cheap reprint published a few years ago.