Very nice. I do not believe the spread of knowledge works this way, however. For one thing, knowledge is productive. Consider a population of agents each havin

Very nice. I do not believe the spread of knowledge works this way, however. For one thing, knowledge is productive. Consider a population of agents each having a body of knowledge some kind of prolog-like set of facts and implications. Clearly the receipt of the same new fact p by different agents will have different logical closures. If for some agents but not others there is the fact p |= q, then the spread of q might appear to work quite differently than the epidemiological model.