  Under the hypothesis that the force of movement is a modification of the body, the non-transfer argument prevents any transfer of such a force from one body to another. However, La Forge assumes as factual that impact implies a redistribution of quantity of motion. Provided that the total amount of motion is conserved, this redistribution can be explained by redistribution either of the movement itself or of the force of movement. But if movement is a modification of the bodies, the non-transfer argument prevents its transfer. Thus, it must be the force of movement that is redistributed among the colliding bodies. This implies that the force of movement would be simultaneously non-distinguished from bodies (which was the hypothesis) and actually distinguished from them (because of the fact that it is redistributed). Unfortunately, this conclusion leads to absurdities. Indeed, either the force of movement is something like a real quality, which La Forge considers a contradictory entity, or we should accept that bodies have the power to create accidents in other bodies, which is taken as another absurdity. Thus, the force of movement cannot be a modification of a body, and the hypothesis must be rejected.