W.K. Clifford once said: "It is wrong for anyone, at any time, to believe anything with insufficient evidence." this is a fallacy, because sufficient evidence is subjective. To say something doesn't exist or isn't real is to say you know everything there is possible to know about the subject, include everything unknown. It is unfortunate that so many people are so ignorant as to claim with absolute certainty that they are right and others are wrong. The argument itself is nothing more than people trying to change others idea of what constitutes sufficiency. If people would come together and exchange ideas with open mindedness, people would be at a capacity to learn and cooperate as a collective.