One of Ian C. Jarvie’s most interesting contributions is his discussion of the thinking of Karl Popper and Michael Polanyi on the nature and workings of the scientific community and their relation to politics (Philosophy of Science 68(4): 545–564, 2001). The self-image these thinkers contributed to still lingers, but their accounts capture a historical moment that has passed and was idealized even when they were written. In this chapter, I examine this tradition and identify the central themes which dominated this literature and ask the question of how this history is relevant today. The answer will perhaps be surprising: despite the fact that the Left of the past held positions that are the opposites of the positions of the present participatory Left, the considerations that motivated the older Left remain