A tourist walked into a pet shop and was looking at the animals on display.
While he was there, another customer walked in and said to the shopkeeper,
"I'll have an AutoCAD monkey please." The shopkeeper nodded, went over to a
cage at the side of the shop and took out a monkey. He fitted a collar and
leash, handed it to the customer, saying, "That'll be $5000." The customer
paid and walked out with his monkey.
Startled, the tourist went over to the shopkeeper and said, "That was a very
expensive monkey. Most of them are only few hundred dollars. Why did that
one cost so much?" The Shopkeeper answered, "Ah, that monkey can draw in
AutoCAD - very fast, clear layouts, no mistakes, well worth the money."

The tourist looked at a monkey in another cage. "That one's 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, some even calculate. All the really
useful stuff," said the shopkeeper.

The tourist looked around for a little longer and saw a third monkey in its
own cage. The price tag around its neck read $50,000. He gasped to the
shopkeeper, "That one costs more than all the others put together! What on
earth does it do?"

The shopkeeper replied, "Well, I haven't actually seen it do anything, but
it says it's a Welding Inspector.