Well, it's at least enough to make the future dark for us. If you believe that there isn't any future worth having, and act on that belief, then your future is

Well, it's at least enough to make the future dark for us. If you believe that there isn't any future worth having, and act on that belief, then your future is likely to be fairly crummy. And, if enough people in a society believe and act that way, the future is likely to be crummier for the society as a whole, too.