As we have seen emotion also can play an important role in finding the truth because being scared to be proven wrong makes some people close the way to develop their idea or refuse to check their assumption so that the real knowledge of truth can’t be revealed. From the article ‘Separating The Pseudo From Science’ by Michael D.Gordin, we get a good idea on disagreement in science between science and pseudoscience. There is not a demarcation between pseudoscience and science because both areas can add to range of human knowledge. As Gordin said “If scientist uses some criterion such as peer review to demarcate, so will the fringe. The brighter the light of science-that is, the greater its cultural prestige and authority-the sharper the shadow, and the more the fringe flourishes.”  The pseudoscience on the fringe will expand the size of the knowledge because pseudoscience views and investigate thing from different perception than normal science. We do have to be careful that it is possible that someone who doesn’t know anything about science can claim something is scientific and true based on non-empirical evidence which can lead them off the track. We need to justify any claim by peer reviews that scientist do before we can add to our theoretical or concrete knowledge bases.