That only comes in in step 10. I agree it’s somewhat suspect. The main reason to imagine these scenarios is temporal locality of natural supervenience. That is, I believe that an agent does not have mental access to the distant past except mediated by the recent past and the present. Any access implying mental states would have to make no behavioral difference, else physical causality would be contradicted. So the randomly generated key is a supporting intuition for temporal locality, and I agree it has problems, but I still think temporal locality is correct, otherwise there would be strange consequences about knowing about the distant past not mediated by the recent past.
That only comes in in step 10. I agree it’s somewhat suspect. The main reason to imagine these scenarios is temporal locality of natural supervenience. That is, I believe that an agent does not have mental access to the distant past except mediated by the recent past and the present. Any access implying mental states would have to make no behavioral difference, else physical causality would be contradicted. So the randomly generated key is a supporting intuition for temporal locality, and I agree it has problems, but I still think temporal locality is correct, otherwise there would be strange consequences about knowing about the distant past not mediated by the recent past.