“Even the best educational computer programs and games, devised with the help of the best educators, contain a tiny fraction of the outcomes of a single child equipped with a crayon and paper. A child’s limitless imagination can only do what the computer allows them to, and no more. The best toys, by contrast, are really 10 percent toy and 90 percent child: paint, cardboard, sand. The kid’s brain does the heavy lifting, and in the process it learns.”