Amelia Oliveira

Depois dos anos 60, e especialmente depois da repercussão da obra kunhiana, tornou-se comum a distinção entre o ponto de vista continuísta e o descontinuísta na avaliação do desenvolvimento científico. Kuhn passou a ser visto como o grande descontinuísta ao lado de Koyré e Butterfield e foi considerado o causador de uma grande mudança no modo de se conceber o desenvolvimento da ciência. Em diversas abordagens, a noção de continuidade tem sido, muito frequentemente, equiparada à acumulação, que implica necessariamente a negação da existência de revoluções científicas. Neste trabalho, buscamos mostrar que o emprego dos adjetivos “cumulativista” ou “continuísta” em oposição ao termo “descontinuísta” pode tanto suscitar interpretações equivocadas de visões históricas quanto estabelecer aproximações entre visões bastante distintas. Isso parece claro quando se analisa, por exemplo, as concepções de Sarton, Conant e Kuhn sobre a acumulação, tarefa a que nos propomos. A análise propicia considerações sobre os papeis desses pensadores na história da ciência.

What is the contribution of Duhem’s work to the modern historiography? His interpreters have been discussing this question and ordinarily have recognized that the main aspect in his extensive work is connected with his research of medieval science. It has become customary to speak of the “discovery of medieval science” as his foremost historiographic achievement. This paper aims to discuss some aspects of Duhem’s historiography more for its promotion of a new historical perspective than for its results. Duhem’s legacy for modern historiography can be investigated from the characteristics that mark this new perspective, as regarded by Thomas Kuhn.

The scientific work of Leonardo da Vinci may have served as the main inspiration for the historical research of George Sarton. Although he never produced a work he felt was worthy of its subject, the little that he did write about Leonardo reveals the importance he attributed to him in the history of science. This is especially clear in Sarton´s treatment of Leonardo and a discovery he did not make: William Harvey´s discovery of blood circulation in the 17th Century. In this article, we refer to this particular episode to trace Sarton´s conception of the development of science. It is a conception that illustrates well the traditional historiographic perspective that is the target of Thomas Kuhn´s criticisms. Although Kuhn never wrote about Leonardo or Harvey, we aim to show that he clearly positioned himself contrary to Sarton, albeit indirectly, with respect to this particular historical episode, as well.