 The introduction to The Philosophy of Space and Time betrays the Marxist inclinations Reichenbach retained from his student years. Science he says, has become mechanized, and develops so rapidly and automatically that its practitioners cannot reflect on what they are doing or why. (He might as well have said they are “alienated from their labor,” but he did not.) A philosophical counterweight (he might as well have said “antithesis,” but he did not) is needed. The counterweight cannot be provided by individuals announcing philosophical manifestos; it requires that philosophers organize into groups so that, collectively, they can keep up with, and exercise analytic control over, the products of the scientific machine. The Vienna Circle, and Reichenbach’s own group of philosophers and physicists in Berlin, are the models. Together, philosophers should produce results, not manifestos. This last demand was the conclusion of the editorial Reichenbach placed in the first issue of Erkenntnis in 1930 (Reichenbach, 1930a); Schlick and Carnap, his collaborators in founding the journal, refused to sign the editorial, Schlick resigned entirely as an editor. 