Richard likes talking about cells, and how small they are...and tonight he was trying to explain it to Garrett, who is 5. He kept saying they are a quarter and a quarter and a quarter the size of certain objects. Ben interjected that Richard really ought to be saying they are a tenth of a tenth...just to exaggerate their tininess to help Garrett understand better. So then Ben asks Richard "What is a tenth of a tenth?" And GARRETT replied "a hundredth". I gasped and laughed out loud at the unknown genius of my five year old.