"There are no child prodigies in biology. Future physicists may play with radios or electronics, forcing electrons to flow along wire paths through light bulbs or amplifiers, but there is no comparable pastime for biologists. Nature-watching is no substitute. Simply looking at frogs is no more instructive than looking at a radio: the tinkering is is the important component. Perhaps someday, when molecular biology has reached elementary and secondary schools, promising young biologists will play with molecular biology sets the way chemists and physicists play with chemistry sets and circuit boards. As it is, most young biologists do no experiments before college. Of the few who do, almost all experiment with chemistry sets, only to switch to biology in college when they learn about its experimental possibilities."