They are giant, inscrutable matrices of floating point numbers that we nudge in the direction of better performance until they inexplicably start working.
" Don't ye talk o't no more, " said Christian. " If he had a handkerchief over his head he'd look for all the world like the Devil in the picture of the Temptation."
The waiter understood English, so she talked English and that was that. Or was it? No, something was wrong, and he had to find out what. He began talking to test her feelings.