I am sure I have told you this one before about the engineer, the physicist and the mathematician. They were each taken to a large room in the centre of which was a £50 note (substitute any larg denomination of your local currency). They were told they could have the money if they followed this simple procedure. Walk half way to the centre and stop. Then walk half the remaining way to the cente and stop. Repeat until you reach the money.
The mathematician worked out it would take an infinite amount of time to reach the money so he did not bother.
The physicist, who worked to five decimal places, was still there three weeks later.
The engineer did three iterations and said "That's close enough" and took the money.
Cheers
Ian
