In truth, one cannot, it seems, oppose mechanism and finalism, one cannot oppose mechanism and anthropomorphism, for if the functioning of a machine is explained by relations of pure causality, the construction of a machine can be understood neither without purpose nor without man. A machine is made by man and for man, with a view toward certain ends to be obtained, in the form of effects to be produced… a mechanical model of any phenomena is explanatory only so long as we take machines as already granted