Alan Kay: A powerful idea about teaching ideas

I linked to the video "The Inner Life of a Cell" within my older blog post The Inner Life of a Cell. The mental model that the Harvard guys used to demonstrate the whole stuff is just too simple and therefore the inner life of a cell got very mysterious. At time 06:22 Alan Kay gives a more accurate view for the model of a cell; e.g. he explains how multiple complex shapes are able to match each other at the right place.