An engineer and a math guy are lined up and told that each time a whistle is blown they may advance half of the distance toward a beautiful naked woman 100 yards away. The whistle blows and the engineer runs like crazy. The mathy stands still.

When asked why he didn't proceed, the mathy says, "If you go half the distance each whistle blow, you'll never reach the objective."

When asked why he ran like crazy, given the fact that the mathy provided, the engineer says, "For all intents and purposes, I'll get close enough."