Can Someone Tell Me...

How many times must my children get their fingers pinched in the closet door before they stop trying to pull it shut from the "crack".

You know- the bifolding doors... That pinch fingers if you're not careful...

Like this:

My doors are so not that pretty...

So, where was I? Oh yes...

Just how many pinches does it take to work it's way in to the brain that you don't put your fingers in the crack and pull? (Oh, yeah, I can just see the Google hits from that statement...)