Feynmann effect

Teaching Lachu has become easy after reading Feynnman books. She had an assignment yesterday to do - paste 3 kinds of leaves and tell their names. I plucked 3 types of leaves and was wondering what the trees names are ? Then remembered Feynmann. Its not important to remember all the names in chinese, english or sanskrit. It is more important to understand their behaviour and characteristics and the rational behind that. Me and lachu visited the tree sites :) and understood what they offer ! And didnt bother to give the names.