When someone begins to believe they have all the answers is when that person loses their perspective and their hold on reality. One should always be open-minded and willing to dig for the truth, not just accept the readily available and accepted beliefs. For at one time in our history we all believed the universe revolved around the earth and that the earth was flat. To the available facts we had during those periods in history who was to argue with those beliefs? Well the few great thinkers and explorers who did not accept the then known beliefs did.
It is the curious minds, those minds not set in concrete that pave the way for humanity, we must reach beyond what we know to be true and into the unknown if we are to evolve mentally and spiritually as a species. To explore, Push the boundaries of what is known is the true nature of man, when we focus on that nature we progress as a species in whole.