Related:

• How many weeks are there in a light year?
• How many first year civil engineering students -- does it take to change a light bulb?
  None. That's a second year subject....
• How many British navy Officers -- does it take to change a light bulb?
  Only one, but it takes him seven weeks to get there....
• How many referral agents -- does it take to screw in a light bulb?
  Two: One to screw you out of a fee, and the other to send you to a store where they ran out of bulbs weeks ago....
• How many Dixons assistants -- does it take to change a light bulb?
  Err. Nahh, it's MEANT to go dark after a few weeks....
• How many gardeners -- does it take to change a light bulb?
  Three. One to change it and two to have a debate about whether this is the right time of year to be putting in light bulbs or daffodil bulbs....
• How many Pentium designers -- does it take to screw in a light bulb?
  586 of them, and it will take them a year from the moment you convince them that the light bulb is not functioning per the spec....
• How many preservation society members -- does it take to screw in a light bulb?
  One, but it takes a year to find an antique Edison light bulb so it'll be architecturally accurate....
• How many NASA technicians -- does it take to change a light bulb?
  Seventy, and they plan it for two weeks and when they finally get around to it the weather's bad so they postpone it till next week....