hmmm...thats a tough one...see there are so many variable to consider, first the height of the light from the floor then the thickness of the pancakes which, of course, given their nature are not all of equal thickness thus the number would vary and thats not even considereing the different cooking techinques used as well as the type and amount of ingredient that would determine the structural stablity of any pancakes used to either reach the light bulb or what have you. of course this does beg the question, why would one use a pancake to change a lightblub. this is a question that will, no doubt, confound think tanks for eons to come, and cannot be readily answered by the denizens here on Scubaboard simply because we are more concerned with blowing bubbles than changing lightblubs.
ok, time for an easier question, why is the sky blue?