Pluralistic ignorance
In social psychology, pluralistic ignorance is a situation in which a majority of group members privately reject a norm, but go along with it because they incorrectly assume that most others accept it. This is also described as "no one believes, but everyone thinks that everyone believes". In short, pluralistic ignorance is a bias about a social group, held by the members of that social group.
Abrahamic religions
Learned Ignorance
In the 2011 book "Learned Ignorance: Intellectual Humility Among Jews, Christians and Muslims", the three editors address the question of "why engage in interreligious dialogue; its purpose?":