That's impossible, because they can't climb the ladder.
Why don't we have both
None. The change, if needed, will come from within.
5 1 to hold the bulb and 4 to spin the ladder.
A ladder in her stocking!
Somewhere between 0 and infinity.
Just two. One to explain to the public that everything possible is being done to solve the problem, and the other to screw the lightbulb into the water faucet.
Three, one to climb the ladder, one to shake it, and one to sue the ladder company.
He hides in an acorn and waits for a bird to carry him up.