The very first scissors appeared in a man not because he had to serve himself somehow, but because he had to cut the sheep somehow. It happened three and a half thousand years ago when the scissors were two blades connected like tweezers. This invention, though functioning, was not especially successful (in fact, the blades of "sheep's" scissors, which appeared for the first time in Ancient Rome, did not turn relative to the center, but just squeezed the hand as a big grab for a piece of cake),...