Where is the learning curve?

Kayden KEEPS slamming her fingers in the drawers and doors to the entertainment center. I know you probably think I should have latches on them - we DO, she can figure them out. In fact, she can take the one off the entertainment center (and it holds the two doors together). Earlier today, I was at the kitchen sink and watching her play in the living room when she slammed her finger in the door of the entertainment center and actually got her hand stuck. What hand you ask? Of course it would be her left one again. What fingers did it get the worst? Mainly just the left ring finger...again. Doesn't she know that is an important finger?!? She's going to have very pretty rings on it one day...