Reminds me of the old joke about the engineer, the physicist and the mathematician. There were all led into a room in the centre of which was a £50 note. They were told they could walk half the distance to the money and then they had to stop. Then they could walk half the remaining distance, stop and repeat the process until they reached the money.
The mathematician quickly worked out he would never get there so he left.
The physicist, who always worked to 5 decimal places, was still there a week later.
The engineer did three iterations, said 'That's close enough' and picked up the money.
Cheers
Ian