I agree that it's not obvious. I suppose where I disagree with anti-physicalists is that I think it can conceivably be resolved by reference to physical facts. I can imagine reading a computer program that simulates the human brain and thinking "ah yes, that captures everything about what I feel". Whereas I don't think the anti-physicalists will ever accept such a possibility.
When do you imagine it started? Does your mental model explain this physically/algorithmically? (Honest question, I consider this often and really have no clue)
> There are few explicit defenders of panpsychism at the present time. The most prominent are David Griffin, Gregg Rosenberg, David Skrbina and Timothy Sprigge.
https://plato.stanford.edu/ARCHIVES/WIN2009/entries/panpsych...
If not, what’s missing?
1. Have a robot build perception models of its environment and itself
2. Have the robot allocate computational resources and sensory bandwidth to the models using attention
3. Have the robot control attention using model predictive control
Because the attention model is less detailed than its actual attention, by virtue of being a model, it doesn't represent the mechanisms of attention or modeling accurately. Instead, it uses non-physical concepts such as "mental possession" to model itself or other agents paying attention to things, or "qualia" to denote the recursion that occurs when percepts we attend to are summarized by the attention model (which in turn can be attended to, and so on).
I don't think so, I think fundamentally it's just a concept used to express a more generalized form of perception (i.e. not divided into discrete senses, either internal or external). I'm happy to leave it at that, but YMMV.