How many archaeologists does it take to change a light bulb? By neepenergy | Mon, June 27, 11 Three: One to change it and two to argue over the age of the old one. (*rimshot*) I love a good light bulb joke as much as the next guy in the lighting biz. Guest Contributors High Efficiency Products energy efficiency industry LED Lighting Northeast Read more about How many archaeologists does it take to change a light bulb?