secondo me fu un idea geniale. chiunque di noi ha guidato con le ginocchia...nee Mouse Before settling on the hand-controlled mouse, Engelbart's lab investigated other possibilities, including the "knee mouse" shown here. Engelbart later said in an interview that the knee controller "was based on my observation that the human foot was a pretty sensitive controller of the gas pedal in cars. With a little work, we discovered that the knee offered even better control at slight movements in all directions. In tests, it outperformed the mouse by a small margin." However, its slight performance advantage was no doubt outweighed by the fact that it was really, really goofy.