neonfrog asks: "Before silicon, before electricity even, what the heck did those of us with geek brains do? Our brains have not evolved appreciably in half an eon (at least mine hasn't, but I may be descended from turtles). What would today's programmers have been doing centuries before the invention of the keyboard? What would an electrical engineer be doing a millennia or three before the concept of resistors and capacitors? What piqued their curiosity? Were their skills esoteric or exotic? They can't all have been Leonardo Da Vincis or court 'magicians', right? Summer's starting and, for some, it's hobby time. I bet the Slashdot community harbors quite a few Journeyman, or even Masters. I know a lot of geeks are beer-makers (and I do so appreciate you folk ... urp!) so there's no danger of that knowledge getting lost. What other ancient tech do you indulge in and keep alive? What are some good resources?"