What happens to the spark of greatness many 18-year-olds have when they arrive at MIT, Harvard, Caltech or Stanford? For most, Edwin Land once said, it is extinguished by undergraduate education's preoccupation with "questions to which the answers are known." The message in all those lectures and exams, he feared, is that the "secret dream of greatness is a pipe-dream; that it will be a long time before [a student] makes a significant contribution-if ever."

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