Earlier quoted context omitted.
"Computers are useless. They can only give you answers." -- Pablo Picasso I wonder where all those artists get their knowledge about computers from. Whoever thinks that computer can only give you answers, and only do what they are told to---has never debugged.
Well, have you debugged? I've done so thousands of times, and invariably the cause was that the computer was doing exactly what I told it to do, but not what I thought I was telling it to do.
Indeed. Apart from hardware flaws and strange concurrency issues, that's the thing.
I did not express myself clear enough.
Perhaps I should have said that some people think, because computers only do what you tell them, that they can not surprise you.
Debugging and fractals are only two counterexamples.