Comment Re:Screw, wedge, and inclined plane (Score 1) 490
Pumping water uphill would have been invaluable in ancient times.
How ancient do you need to get?
Pumping water uphill would have been invaluable in ancient times.
How ancient do you need to get?
The rule on staying alive as a program manager is to give 'em a number or give 'em a date, but never give 'em both at once.