Time, imagination, uncertainty, In professor G. L. S. Shackle's theory Philippe Beaughand If Professer G.L.S. Shackle's work has not the audience it should have got, the reason certainly is that « orthodox » economces has not cared to face the important issues it raises. Beginning with conditions and processes of making economic choices, as studied by Prof. Shackle in his latest book, this article intends to show its significance by examining the fundamental problems it brings up and the conclusions logically reached — particularly the subversion of economic rationalism which, while excluding ail together time and man's imagination, leads to fatalism of total determinism. By its implications (as a paramount example thé theory of profits is ...