I just wondered if you always carry a miniature tool kit when you take a woman out to dinner.”

“Always. I'm an engineer.

It was the engineer who determined what problems to investigate, designed the experiments, and defined the assignments for the mathematicians.

When an engineer wants to do something, he will do it

He's a sturdy fellow, bald as a hen's egg, and like all engineers, practical as a pensioner.

So here we have pi squared, which an engineer would call 10.

Mummy Code - a software term used to describe layers of bandages and patches written around a core of dead code which is still used.