Zero, its already lit
Well first let's talk about the concept behind this whole "light bulb" thing.
Two. One to do it, a second to keep yelling, "You're lookin' BIG, man!"
Prism
The optimist sees the light at the end of the tunnel. The pessimist sees nothing. And the realist sees the train.
When they lose their haunting licenses.
Scares their dogs.
One, but the light bulb has to *want* to be screwed in.
Only 1, but it takes them 15 episodes to do it.
Because when a nun times anything it's zero. (0*n=0)
Significantly more than zero, *p* < .001.