Looking for a holiday gift, a woman decided to browse in an exotic pet store. While she was there, another customer walked in and said to the shopkeeper, "I'll have a CAD monkey, please." The shopkeeper nodded and took a monkey out of a cage at the side of the shop. He fitted a collar and a leash, handed it to the customer, saying "That'll be $5000." The customer paid and walked out with his monkey.
Startled, the woman went over to the shopkeeper and said, "That was a very expensive monkey. Most of them are only a few hundred dollars. Why did that one cost so much?"
The shopkeeper answered, "Ah, that monkey can draw in CAD - very fast, clear layouts, no mistakes, well worth the money."
The woman looked at a monkey in another cage. "that one is even more expensive! $10,000! What does it do?"
"Oh, that one's a Design monkey; it can design systems, layout projects, mark-up drawings, write specifications, and even calculate. All the really useful stuff," said the shopkeeper.
The woman looked around a little longer, and soon she saw a third monkey in a cage of its own. The price tag around its neck said $50,000. She gasped to the shopkeeper, "That one costs more than the others combined! What on earth does it do?"
"Well, " replied the shopkeeper, "I haven't actually seen it do anything, but it says it's an Engineer."