Of course, given that it's so difficult to teach people even to add fractions, the hope is rather dim... - Exactly. For instance, the guy was convinced that DNA carries from one generation to another unchanged. Obviously, when you believe that, you run into all kinds of contradictions with evolution theory. I tried to explain how the DNA mechanism works and what mutations are, but he wouldn't listen. And when people don't listen, you can't explain anything to them :-(

Yes, if people see the distinction, the level of debate would be improved. But for that you need someone who is willing to see it.