This paper is about the epistemology of quantum theory. We establish a new result about a limitation to knowledge of its central object---the quantum state of the universe. We show that, if the universal quantum state can be assumed to be a typical unit vector from a high-dimensional subspace of Hilbert space (such as the subspace defined by a low-entropy macro-state as prescribed by the Past Hypothesis), then no observation can determine (or even just narrow down significantly) which vector it (...) is. Typical state vectors, in other words, are observationally indistinguishable from each other. Our argument is based on a typicality theorem from quantum statistical mechanics. We also discuss how theoretical considerations that go beyond the empirical evidence might bear on this fact and on our knowledge of the universal quantum state. (shrink)

Roderich Tumulka’s GRWf theory offers a simple, realist and relativistic solution to the measurement problem of quantum mechanics. It is achieved by the introduction of a stochastic dynamical collapse of the wavefunction. An issue with dynamical collapse theories is that they involve an amendment to the Schrodinger equation; amending the dynamics of such a tried and tested theory is seen by some as problematic. This paper proposes an alteration to GRWf that avoids the need to amend the Schrodinger (...) equation via what might be seen as a primary set of solutions to the Schrodinger equation that satisfy a normalisation condition over space and time. The traditional Born-normalised solutions are shown to be conditionalisations of these primary solutions. (shrink)

In this paper I explore humility as a paradigm, with reference to recent debates over the morality and rationality of emotions, and to the relation between religion and emotion. In Ancient Greek ethics, humility did not yet play a role; with the rise of Christianity, however, it becomes one of the cardinal virtues -- only to disappear again with the onset of modernity. Against a culture-pessimistic interpretation of this development, this article begins by characterising the relation between virtue and emotion, (...) before reconstructing the inner rationality of humility and showing how it can be traced through several transformations to a modern ethics of responsibility. Against this background, possible manifestations of the humble attitude in the present are made plausible. (shrink)