None, they all know someone that does it for them.
How do you put an elephant in a safeway bag? : I don't know, how? : Take the S away from "safe" and the F out of "way." : But there's no F in way. :
I don't know. I just build the fence.
A. Five!...Six!...Seven!...Eight!
It doesn't matter.
Just two, but how they get in there.. I don't know. (Stolen from an old Maxim in my dad's storage)
One to generate a "ChangeLightBulb" event to the socket.