We Know It's True

How many linguists does it take to change a light bulb?
One, but he/she (politically correct) must consult the Oxford English Dictionary.

How many translators does it take to change a light bulb?

One, but he/she must first find out from which language this joke is translated.

How many literature people (if you have a different term for them, please say:))) does it take to change a light bulb?

Depends on what the writer wanted to say with that.

How many teachers does it take to change a light bulb?

One, but he/she must first check its knowledge about changing light bulbs.