Physical particles are unmotivated

A Note On Mathematical Economics
- Highlight Loc. 27-30  | Added on Wednesday, November 09, 2011, 04:09 AM

In physics, the facts of nature are given to us. They may be broken down into their simple elements in the laboratory and their movements observed. On the other hand, we do not know the laws explaining the movements of physical particles; they are unmotivated. In economics, however, the conditions are almost reversed. Here we know the cause, for human action, unlike the movement of stones, is motivated.