When I was in school we were challenged to think and to question, that until a theory becomes fact we must challenge its validity in what was then called the scientific method. Some things were fun to debate, like evolution, while others were difficult and required more thought and experimentation. One thing was always true; science was not a consensus sport.
Consensus is fine for choosing a direction, for accomplishing great tasks and for moving large groups in right direction but it can also produce some devastating results, think Stalin. Consensus creates a uniformity of thought it works in political parties, cults and religion and gets everyone on the same page, not necessarily the right page.