This was an amazing lecture by Josh Tenenbaum. He presents motivation for determining the type of data structure for representing knowledge without knowing how the knowledge is best organized a priori. He presents the ways children learn and how they organize knowledge at an early age starting at a very simple structure and building up to a more accurate model. He points out that current methods seem to either take pre-existing knowledge about the best data structure to use or they simply make the data fit the predefined data structure. He presents many examples of current research using this general concept and finally takes some questions with regard to the speech. This lecture is extremely upbeat and motivating for me to research more in depth the examples presented in the lecture.