Physicist, pastor and mathematician on the top of a skyscraper. They are asked to jump precisely into the swimming pool on the ground.
Phsycist calculates wind, distance, perspective, jumps and lands in the pool.
Pastor meditates, prays, focuses, jumps and lands in the pool.
Mathematician calculates a beautiful parabel, jumps and goes straight up to the sky. What happend? Oh well, he made a sign flaw :)