Quantum Information Versus Epistemic Logic: An Analysis of the Frauchiger–Renner Theorem

The philosopher William James once wrote, Like the old woman who described the world as resting on a rock, and then explained that rock to be supported by another rock, and finally said it was ‘rocks all the way down,’ he who believes this to be a radically moral universe must hold the moral order to rest either on an absolute and ultimate should or on a series of shoulds ‘all the way down’.