Yes. As with the many other believers in my life who perceive things I don't, and don't perceive things I do, I've no idea if either of us is blind/hallucinating, or if the same things just look different wehn viewed by someone else. And without swapping brains, I suspect we've no way of knowing.

In other words, I don't know whether even to ask 'which of us is wrong?' is a meaningful question.