Abstract

Abstract:Enlightenment era optimism that technological and educational developments offer a progressive path to plenty and liberation supports a hope that human toil may be progressively reduced. The Development Thesis defended by G. A. Cohen is a piece of that Enlightenment optimism. The Development Thesis holds that productive forces tend to develop throughout history. The tendency for such an increase in productive forces to occur is, according to Cohen’s argument, due to persistent facts about human nature. If Cohen is correct, there is a tendency toward progress of an important sort, and this progress is due in significant part to human nature. But the development of productive forces also destroys nonhuman natural value. In the era of the Anthropocene this is occurring on a planetary scale. The simultaneous development and destruction entails that claims of progress must rely on an all-things-considered judgment. But due to the plurality of the relevant values, which cannot be compared according to a common metric, rational disagreement about the existence of progress and our progressive nature can be expected to persist.