An egoistic micro-motivation, lastly, is fairly self-explanatory: I have such a motivation to cooperate when, in those circumstances, I see it as in my egoistic interest to do so, but this is not because I am generally motivated, as in the Hobbesian system, to cooperate as such. This does not rule out the possibility that I may regularly find myself in such situations, or even that there may be some structure as a result of which I regularly find myself in such situations: to produce such a structure might be a triumph of the Invisible Hand. It will be a mark of this kind of motivation, however, in a pure form, that there will be no motivational momentum from one case of cooperation to the next.

DEFINE: Distinguishes egoistic micro-motivation from Hobbesian generalized cooperation as a technical concept.

Diego Gambetta, Trust - Making and Breaking…, loc. 199