I've come to view this as something akin to dyslexia. Everyone's brain works differently, and some people just get a bad left/right circuit. The description of

I've come to view this as something akin to dyslexia. Everyone's brain works differently, and some people just get a bad left/right circuit. The description of people's mental models for understanding left/right is pretty amusing. You never realize that other people have a fundamentally different way of thinking about certain things. Everyone has to come up with a model of the world in their head, and when some parts of your brain don't work quite right, the solutions can get pretty creative.