Hmm, what do people think of this one? I kind of think trying to add scientific rigor to something that depends on so many subjective factors is misguided, but the fact that you can’t doesn’t make it invalid. The world is messy and some stuff requires professional judgement. The influencer “theory” isn’t a scientific theory and you shouldn’t try to make it one. It’s simply a model to look at how ideas spread. It’s not like pushing any message or product to any schlub with alot of twitter followers, will yield the same result. Judgment is good, we shouldn’t try to make everything so we can just plug numbers into a computer and blindly follow the result. People are interesting, lets keep it that way.