Abstract
We have yet to fully understand the mariner or the measure to which logical empiricism emerged as a conventionalist response to both traditional Kantian and empiricist epistemology and to the apparent triumphs of “conventionalist stratagems” (in Popper’s aspersive locution) in the foundations of science. By “conventionalism”, however, is here understood a broader sense than customary, an extrapolation of views on the foundations of geometry and physics (associated in the first instance with Poincaré“) to an encompassing epistemological consideration of the development and validity of scientific concepts generally. In this new construal, the concepts of science are neither derivable from sense experience, nor are they transcendentally valid a priori conditions of its possibility. Rather they are “free creations of the human mind” whose provenance is “logically arbitrary”, as Poincare’ and (subsequently) Einstein put it.