Mathematicians Three engineering students were gathered together discussing the possible designers of the human body. Just look at all the joints. The nervous system has many thousands of electrical connections.
Engineers think that equations approximate the real world.
Scientists think that the real world approximates equations. A Mathematician, a Biologist and a Physicist are sitting in a street cafe watching people going in and coming out of the house on the other side of the street. First they see two people going into the house. After a while they notice three persons coming out of the house. An engineer, a physicist, and a mathematician are shown a pasture with a herd of sheep, and told to put them inside the smallest possible amount of fence.