Michtav M’Eliyahu (1:75): Our Sages have already told us to listen to the words of gedolim - “Even if they tell you that left is right.” Furthermore a person should not think, Gd forbid!, that they have certainly erred just because someone so insignificant as himself has perceived that they erred. In fact it is important to know that one’s perception of reality is totally null and void as the dust of the earth in comparison to the clarity of intellect and Divine assistance that they have. We have an important halachic principle that one beis din can not nullify the ruling of another beis din unless it is greater than the first in wisdom and number. Otherwise it is likely that that which he thought that he perceived is merely an illusion and distorted understanding of reality. This is what is meant by Daas Torah - which is an aspect of Emunas Chachomim (faith in the sages).