Do you believe everyone can learn algebra? What evidence do you have for this belief? Have you taught in the classroom much to students with a wide range of educational backgrounds?

I don’t believe everyone has equal intellectual talent in all areas. My talent for math far exceeds my talent for physics. I’ve tried to learn physics but I just can’t. I have no intuition for it. There is variation amongst our brains and how the connections in our brains formed in childhood. In some people the wiring is such that learning a given topic is not feasible. Such is my belief.