Today, I was reminded of a very old, very bad joke...
An engineer and a mathematician are put in a very large room, with a beautiful naked woman at one end, and the following instructions:
"Walk halfway across the room
Stop, and walk half the rest of the way
Stop, and walk half the rest of the way again
Keep doing this until you get to the other side of the room
The beautiful naked woman will sleep with whoever gets across the room first."
The engineer starts walking, and stopping, and walking, and stopping etc...
The mathematician sits, thinks for a minute, and then throws up his hands and yells "This is impossible. If I can only go half the remaining distance each time, no matter how many times I do it, I'll never reach the other side".
Meanwhile, the engineer, furiously copulating with the beautiful woman on the other side of the room, turns over his shoulder and says "Hey... close enough".