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235 pages, Paperback
First published July 1, 1983
"It might be tempting to read this history as a tale of dedication rewarded after years of neglect—of prejudice or indifter. ence eventually routed by courage and truth. But the actual story is both more complex and more illuminating. It is a story about the nature of scientific knowledge, and of the tangled web of individual and group dynamics that define its growth. A new idea, a new conception, is born in the privacy of one man's or one woman's dreams. But for that conception to become part of the body of scientific theory, it must be acknowledged by the society of which the individual is a member, in turn, the collective effort provides the ground out of which new ideas grow. Scientific knowledge as a whole grows out of the interaction—sometimes complex, always subtle—between individual creativity and communal validation. But sometimes that interaction miscarries, and an estrangement occurs between individual and community. Usually, in such a case, the scientist loses credibility. But should that not happen, or, even better, should it happen and then be reversed, we have a special opportunity to understand the meaning of dissent in science.
The story of Barbara McClintock allows us to explore the conditions under which dissent in science arises, the function it serves, and the plurality of values and goals it reflects. It makes us ask: What role do interests, individual and collective, play in the evolution of scientific knowledge? Do all scientists seek the same kinds of explanations? Are the kinds of questions they ask the same? Do differences in methodology between different subdisciplines even permit the same kinds of answers? And when significant differences do arise in questions asked, explanations sought, methodologies employed, how do they affect communication between scientists? In short, why could McClintock's discovery of transposition not be absorbed by her Contemporaries? We can say that her vision of biological organization was too remote from the kinds of explanations her colleagues were seeking, but we need to understand what that distance is composed of, and how such divergences develop.
Thomas S. Kuhn has reminded us that conversions in science (or resistances to conversion) occur "not despite the fact that scientists are human but because they are." He chooses to focus attention in the community and the dynamics by which the community forms and reforms itself. Our focus, by contrast, will be on the individual, on the "idiosyncracies of autobiogra-phy and personality" that incline an individual scientist to a particular set of methodological and philosophical commit-ments, to resisting or accepting the dominant trend within a field—but always against the background of the community. Of necessity, therefore, this book must serve simultaneously as biography and as intellectual history. Its starting point is the recognition that science is at once a highly personal and a communal endeavor." (xx-xxi)