According to author, Lisa Randall, what do scientists often have to do in order to find the truth?

In order to find the truth, sometimes a scientist must follow an idea that turns out to be wrong in the face of accumulating scientific evidence. As Randall's book demonstrates, scientists often learn more from their mistakes than from their triumphs. For this reason, she says, it is important to pursue interesting theories, even if they do not fly in the face of reality. Oftentimes there is a core of truth hidden beneath layers of misguided thinking that will emerge when the gem of original thought is cleaned and buffed.