Actually that's not true. Most people believe one side or the other. One side is mainly based in fact and the other side is mainly based in fiction, so the two sides are incompatible, but most people do know which category they are in. These days, the "both sides" argument comes down to something like this. "Two plus two is four." "No it isn't." "Yes, it is. You can ask any expert on this subject, and they will all agree." "Those 'experts' are biased and just looking out for themselves. You can find a lot of people who will tell you that two plus two is something else." "True, you will find a lot of people who will say that, but they are wrong. Their conclusion is based on an incorrect understanding of the question, or bad information in general." "I did my own research, and it all comes down to what you want to believe." "No it doesn't. One side is grounded in the accepted conventions of mathematical understanding, and other other side is nonsense." "Wake up, sheeple! Quit allowing the government to do your thinking for you. If you really want to get informed, you need to look at both sides." This is why those of us who live in the fact-based world have little patience for the "both sides" people.