Light Bulb - Rec. Humor Readers II

Q: How many rec.humor readers does it take to change a lightbulb?
A: 1000. And they change the same bulb over and over and over again and still no one notices it's been changed so they change it again and again and then they even discuss it and then someone flames them for not doing it in rec.humor.d.

Light Bulb - GLC Workers

Q: How many GLC workers does it take to change a lightbulb ?
A: Four. One to do it and three to go round putting up posters announcing that the GLC, working for London, is going to change the lightbulb.

Tech Writers to Change Lightbulb

Q: How many tech writers does it take to change a lightbulb?
A: None: It should be obvious to an intelligent user.