Whatever you believe to be true, you are probably wrong, in part or in whole. Truth is where we stop when we've grown tired of thinking about something.
Or were too lazy to think about it to begin with and just accepted someone else's conclusion in the belief that they weren't as lazy as us.
Whether a billion people believe it or one person does, that has no bearing on whether something is true. Truth does not care what you think.
Of course, I could be making all this up.