re:rabbis and science

Question

after reading your response to rabbis and science i think you wrote that when rabeinu tam asked moshe what the true answer was and he said he sided with rabeinu tam but the others didnt care cuz the majority had decided otherwise? what does this mean- that if most rabanim say something then that is the right way? i am confused- what if all the rabanim say something but the someone comes and sees that it is wrong as Rabbi Abadi has in numerous occasions what does that mean. I would like to believe that i should listen to the one who sees clearly but that response just confused me please explain thanks