Why would you think “magic access” is required? It seems to me the ordinary non-magic causal access granted by our senses works just fine.
I’ll let Kaj say more, but in short it becomes a logical necessity to ground the line of reasoning without introducing self-contradiction or enough freedom that you can say P=~P and not straying into saying something isomorphic to the postrationalist position.
I’ll let Kaj say more, but in short it becomes a logical necessity to ground the line of reasoning without introducing self-contradiction or enough freedom that you can say P=~P and not straying into saying something isomorphic to the postrationalist position.