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 Bell Labs vice presidents does it take to change a light bulb?

That's proprietary information. The answer is available from AT&T on payment of license fee (binary only).
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What did Jay-z call his wife before they got married?

Feyonce

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What's the name of the archeologist that works at Scotland Yard?

Sherlock Bones.
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A jump-lead walks into a bar.

The barman says "I'll serve you, but don't start anything"
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How many ergonomicists does it take to change a light bulb?

Five. Four to decide which way the bulb ought to turn, and . . .
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How many Trumpet players does it take to change a light bulb?

Only one. But he'll leave a big puddle of spit on the floor underneath him.
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What's black and white, black and white, black and white and green?

Three skunks fighting over a pickle

First dog: My master calls me Furball. How about you?
Second Dog: My master calls me Sitboy
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What do you call a man with a rubber toe?

Roberto.
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Old chemists never die,

they just stop reacting.
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