Hacker News new | comments | show | ask | jobs | submit login anotherevan 2 hours ago | link | parent I just recently heard a story that went the other way. An engineer of elevator systems would spend hours doing all his calculations by hand, vowing it was too complicated and important to trust to a computer. (Yeah.) The programmers in the company assured him they could write a program to do the calculations for him, which they did. He never trusted the results though, insisting that the program was not producing correct results. One of the programmers realised that he didn't trust it because the program spat out the results almost instantly. It was too fast, it had to be wrong. So he stuck a twenty second sleep in before the output, told the engineer he found the problem and fixed it. The engineer now felt the results were correct. (Aside: I don't think I would want to get in a lift ...