Critical thinking skills. It is a natural and healthy part of our development to (in early stages) give complete trust (think worship) to our parents/authority figures. At some point we realize that our teachers are imperfect and have imperfect motivations behind what they strive to teach. After that milestone has been reached we are no longer content to be mere followers... We prefer negotiative relationships from then on and our new found dignity demands that we be both influential AND influenceable.