noun \ ˈgrüp-ˌthiŋk \
Definition of groupthink
a memetic processing pattern that prevents people from recognizing false or incorrect information because of a large number of others who believe in it and vouch for its validity.
That is a well-known phenomenon, which until recently remained unexplained and therefore unclear. Groupthink is a negative consequence of conformity - one of the most powerful tools used by human civilization for the evolution of its culture. Memes that have been accepted by a large number of people, Knowmen take on faith, without any verification. If there is too much information, the Knowmen tend to trust the opinion of others more than to their own eyes, ears, and reason. When the proportion of Knowmen in a group is too high, conformity transforms into groupthink.