I defined experience in such a way that only the existence of the model is required. And it's not hard to prove that they have a model of reality - simply ask them to predict what will happen. They don't even have to be right - any prediction about X means you have a model of X. It might be "everything is random" but it's still a model.

You're free to define experience differently but usually it devolves into defining unknown by unknown.

> You're free to define experience differently but usually it devolves into defining unknown by unknown.

Many philosophers would suggest that we don't bother "defining" anything at all, strictly because of the tendency for things to devolve into a semantic death-trap. So instead, we just kind of take it for granted that everyone knows what an experience is, at a base level. For instance, it was an Experience to see Jimi Hendrix. However, I definitely have not had that particular experience. There are experiences I could have, such as the experience of going on a roller coaster, or going into space, and ones that I could not have, such as the experience that an anglerfish has when it eats. The question at hand is whether or not these experiences have anything to do with each other, whether there's a "Grand Unified Theory" of experience and consciousness that allows us to make mutual sense of these disparate experiences, or whether there's some limit to what things might constitute an experiment - e.g. the experience of being a rock thrown through a window.

> Experience = event that changes the model of the world you have in your brain.

This is not what philosophers of mind are interested in. You're free to define experience differently, but you're not participating in the same conversation if you do.