If there is nothing in a moving body that differs from its neighborhood of contiguous bodies, then a body's motion is not due to it possessing a special property that its neighborhood lacks.

The problem with this line of reasoning, however, is that it only works if one presupposes that the two bodies are approaching one another, and this is not a feature of the system that can be captured by sole reference to the contiguous neighborhood of each individual body. Even if there is reciprocity of transfer between a body and its neighborhood, it is still not possible to determine which collision rule the impact will fall under, or if the bodies will even collide at all, unless some refer