i don't know why

I was talking to a little kid the other night.  She was hypothesizing that in order to reach the ceiling, we'd need several people on top of each others' shoulders (with her on top, of course).  I said I didn't think it would take that many people, since the ceiling wasn't really that high.
 
"What if they were midgets?", she said.  If the answer doesn't fit your question, change the question.  And don't forget about midgets.