Well, no...we explain why 2 + 2 is 4 again, and we make him work with little markers and number lines and other things until he actually understands that 2+2 IS 4. Because mathematics isn't an opinion, it never changes. And because he's a kid, and he needs to learn. If he can't learn basic math, he sure isn't going to get very far in life.

A lack of critical thinking is a huge part of the problem...well, in the entire world, actually.
Sure, people have the right to be illogical, but they are stupid if they exercise it. I have the right to recognize that.