Diamonds are a Computer's Best Friend

Further
Proof that computers are female: diamonds can make them run better.
(OK, so it's only really applicable to quantum computers, which don't really
exist yet.)

Other evidence includes the fact that they run on internal logic only their
creator understands, they communicate rapidly in a form indecipherable by
man, and their error messages generally reduce to "if you don't know what's
wrong then I'm not telling you."