> > A man goes into a pet shop to buy a parrot. The shop owner points > > to three identical looking parrots on a perch and says: "The parrot > > on the left costs 500 dollars". > > > > "Why does the parrot cost so much?" asks the first man. The owner > > says "Well, the parrot knows how to use a computer". > > > > The man then asks about the next parrot to be told that this one > > costs 1,000 dollars because it can do everything the other parrot can do > > plus it knows how to use the UNIX operating system. Naturally, the > > increasingly startled man asks about the third parrot, to be told > > that it costs 2,000 dollars. Needless to say this brings the question > > > > "What can it do?" > > To which the owner replies "To be honest I have never seen it do a > > thing, but the other two call him boss!". > >