Mark Granovetter
You must add a |reason= parameter to this Cleanup template – replace it with {{Cleanup|reason=<Fill reason here>}}, or remove the Cleanup template.
Mark Granovetter is a sociologist who considered among other things a model how fads build Consider a hypothetical mob assuming that each person's decision whether to riot or not is depedent on what everyone els is doing. Intigators will begin rioting even if no one else is, while others need to see a critical number of trouble maker before they riot, too. This threshold is assumed to be distributed to some probability distribution. The fascinating thing in, that the outcomes may diverge largely although the inital condition of threshold may only differ slighlty.