Every knowledge we acquire doesn't necessarily have to be gotten by revelation when actually they can be gotten by simple personal observation. Being a good observer gives you an independent thought which makes you able to question popular thinking and not be easily misled by an idea/pattern/system that's been wrongly accepted/adopted by the majority. Sometimes, it's possible everyone could be moving in the wrong direction if they've willingly decide to go blind by suspending their ability to see in order to remain loyal to an eye whether (s)he has a bad eyesight (vision) or not.

A teacher had set up a telescope so that his students could view a planet and its moons. The first student looked through it, but when the teacher asked if he could see anything, the boy said no; the teacher showed him how to adjust the focus, and the boy finally said he could see the planet and moons. One by one, the students stepped up to the telescope and saw what they were supposed to see. Finally, the last but one student looked into the telescope and said he couldn't see anything.
“You idiot,” shouted the teacher, “you've to adjust the lenses.” The student tried, but he finally said, “I still can’t see anything. It's all dark.”
The teacher, disgusted, looked through the telescope himself, and then looked up with a strange expression. The lens cap still covered the telescope. None of the students had been able to see anything!

Questioning a popular thinking and staying true to your observation for the growth/good of all (humanity) even if it means you've to stand alone does not make you a rebel.