PERSON
Barbara McClintock
The cytogeneticist who discovered that genes can move—working alone with maize at Cold Spring Harbor, she showed that the genome rewrites itself from within, was dismissed for thirty years, then received the 1983 Nobel Prize; and she left AI a question it cannot yet answer: can there be understanding without anyone there to do the understanding?
McClintock is the scientist who was right before the field was ready to agree. By the early 1950s she had assembled, from years of breeding maize and reading its chromosomes under the microscope, a case that genes could move—that specific
transposable elements could detach from one chromosome location and insert themselves at another, switching neighboring genes on and off, recording their own displacements in the visible streaks and sectors of the corn kernels she called “a printout.” The 1951 Cold Spring Harbor Symposium met this with puzzlement and something close to hostility; the field was not built to absorb an idea it did not yet have the vocabulary to place. The wait—and it was a disciplined, continued wait, not a retreat—lasted thirty-two years. The Nobel Prize came in 1983, unshared, at eighty-one. What makes her relevant to
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