How many mathematicians does it take to screw in a light bulb?

One. He gives it to six Californians, thereby reducing the problem to an earlier joke...

In earlier work, Wiener [1] has shown that one mathematician can change a light bulb.

If k mathematicians can change a light bulb, and if one more simply watches them do it, then k+1 mathematicians will have changed the light bulb.

Therefore, by induction, for all n in the positive integers, n mathematicians can change a light bulb.

Bibliography:

[1] Wiener, Matthew P., <11485@ucbvax>, Re: YALBJ, 1986
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How many thought police does it take to screw in a light bulb?

None. There never was any light bulb.

Notes: Probably the only really good light bulb joke of 1984.
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Who makes dinosaur clothes?

A dino-sewer.
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What did one egg say to the other egg?

Let's get crackin!
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What did the peanut say to the walnut?

Nothing. Nuts can't talk.
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Name four men that are in a rock group together but none of them sing nor play music...

Mt Rushmore. They're a rock group.. it's a rock...group
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What is a tree's favorite drink?

Root beer.
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How do you make a fire with two sticks?

Make sure one is a match!
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How many professors does it take to change a light bulb?

Only one, but they get three tech. reports out of it.
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Kleptomaniacs just don't get puns

they always take things literally.
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