The last nodes are never observed by anyone, but they descend from the same physics, the same F(physics), that have previously been pinned down, or so I assume. You can thus meaningfully talk about them for the same reason you can meaningfully talk about a spaceship going over the cosmological horizon. What we’re trying to avoid is SNEEZE_VARs or lower qualia where there’s no way that the hypothesis-making agent could ever have observed, inducted, and pinned down the causal mechanism—where there’s no way a correspondence between map and territory could possibly be maintained.
The last nodes are never observed by anyone, but they descend from the same physics, the same F(physics), that have previously been pinned down, or so I assume. You can thus meaningfully talk about them for the same reason you can meaningfully talk about a spaceship going over the cosmological horizon. What we’re trying to avoid is SNEEZE_VARs or lower qualia where there’s no way that the hypothesis-making agent could ever have observed, inducted, and pinned down the causal mechanism—where there’s no way a correspondence between map and territory could possibly be maintained.