Sure there is groupthink, we're mostly software engineers. But it's a relatively small group, uniform presentation visible to anyone, and very limited reach.

Sure there is groupthink, we're mostly software engineers. But it's a relatively small group, uniform presentation visible to anyone, and very limited reach. Contrast with what's going on in Twitter and Facebook: many orders of magnitude more reach, and it's almost impossible to have any idea what people are seeing or saying in aggregate, and what the many small groupthink bubbles are.