At the beginning of this century the two most important theorists in t
he history of American education, Edward Thorndike and John Dewey, for
mulated radically different visions of how the art of teaching could b
e transformed into a science. Thorndike, combining a strongly heredita
rian behavioural psychology with the newly developed techniques of sta
tistical analysis, showed how schooling could be structured around the
methods of industrial management. By atomising and standardising ever
y aspect of the educational process, a cadre of experts and administra
tors would replace traditional rule-of-thumb methods with scientifical
ly proven practices dovetailed to the needs of a modern state. Althoug
h Dewey was also committed to the value of science as a universal tool
for human betterment, he completely rejected the epistemological, psy
chological and sociological assumptions implicit in Thorndike's techno
cratic vision. In contrast to Thorndike's mechanistic world view, Dewe
y formulated an organismic ontology modelled on the process of adaptat
ion and demonstrated that the scientific method depends upon the const
ruction of a democratic community of problem solvers. By evaluating th
ese theories of human nature and the social good, I discuss the failin
gs of Thorndike's programme within the American school and explain the
implications of Dewey's more sophisticated arguments for educational
practice.