This article lies behind a NY Times firewall:
Challenging the Crowd in Whispers, Not Shouts
It discusses how new ideas, in this case economics, have to overcome the obstacle of the groupthink wall.
... And why didn’t a consensus of economists at universities and other institutions warn that a crisis was on the way?Pretty sad. I think groupthink mixed with superstitious economic theorizing have lead us down this path.
The field of social psychology provides a possible answer. In his classic 1972 book, “Groupthink,” Irving L. Janis, the Yale psychologist, explained how panels of experts could make colossal mistakes. People on these panels, he said, are forever worrying about their personal relevance and effectiveness, and feel that if they deviate too far from the consensus, they will not be given a serious role. They self-censor personal doubts about the emerging group consensus if they cannot express these doubts in a formal way that conforms with apparent assumptions held by the group.
"In 585BC, long before Jesus, the Greek philosopher Thales of Mellitus concluded that every observable effect must have a physical cause. The discovery of causality is now taken to mark the birth of science, and Thales is immortalized as its father. But causality also means the death of superstition." -- Robert Park, 2009