mathmeticians, physicists, engineers... and architects

Q: What's the difference between a mathematician and a physicist?
A: A mathematician thinks that two points are enough to define a straight line while a physicist wants more data.

A Mathematician, an engineer and a physicist were traveling through Scotland when they saw a black sheep through the window of the train.
"Aha", says the engineer, "I see that Scottish sheep are black."
"Hmm", says the physician, "You mean that some Scottish sheep are black".
"No", says the mathematician, "All we know is that there is at least one sheep in Scotland, and that at least one side of that one sheep is black!"

Old mathematicians never die; they just lose some of their functions.

Q : Did you hear about the murderous mathematician?
A : He went on a killing spree with a pair of axis!

Three freshman-engineering students were sitting around talking between classes, when one brought up the question of who designed the human body.
One of the students insisted that the human body must have been designed by an electrical engineer because of the perfection of the nerves and synapses.
Another disagreed, and exclaimed that it had to have been a mechanical engineer who designed the human body. The system of levers and pulleys is ingenious.
"No," the third student said, "you're both wrong. The human body was designed by an architect. Who else but an architect would have put a toxic waste line through a recreation area?"