A guy is standing on the corner of the street smoking one cigarette after another.
A lady walking by notices him and says, "Hey, don't you know that those things can kill you? I mean, didn't you see the giant warning on the box?!"
"That's OK," says the guy, puffing casually, "I'm a computer programmer."
"So? What's that got to do with anything?"
"We don't care about warnings. We only care about errors."
A computer programmer was taking a smoke break when a woman passing by sarcastically commented, "Don't you know that those things can kill you? They put a warning on every pack!"
"Oh, that's okay," said the guy, exhaling smoke, "I'm a programmer."
"What's that got to do with anything?" she asked.
He answered, "Programmers ignore warnings; we only care about errors!"