On April 28, the Cognitive Development Center (CDC) organized a public lecture by Ori Friedman, Assistant Professor, Developmental Psychology, University of Waterloo, Canada. Ori Friedman began his talk by discussing two puzzles important to cognitive development. Puzzle one: how do children acquire general knowledge, aside from direct observation? In our modern society, children have many avenues from which they can learn enduring, generalizable information, but in a time before television, children’s books, and pictorial media, how did children learn facts about the world?