Or Maybe Not

David Deutsch

Christopher A. Fuchs

30 August 1998, “Desiderata” I just read over your four desiderata for an acceptable “über-quantum theory” for the third time. (When I finish this note, I'll read them over for the fourth time … at the very least for simile's sake.) They're not so uninspired! (… to use your words, that is.) But I do hope you will keep your promise of writing a longer exposition. In the mean time, let me ask you for one point of clarification about the connection between your Desideratum #1 and my latest happy thoughts. Kentism 1: 1. A theory in which some elementary, and precisely defined, components constitute the basic statements from which propositions about an external and objective reality can be built. Maybe trajectories à la Bohm, maybe collapse events à la GRW, maybe events of more general form à la consistent historians, maybe the evolution of the classical gravitational field in some (unknown) theory that links classical metric and quantum matter. Maybe something quite different from any of the above. But, at any rate, something which allows us to talk about what happened in the past, in the absence of observers, and which allows us to resolve the measurement problem by replacing the vague notion of measurement by something precise.

Charles Day

Denis V. Juriev

The purpose of this very short note, which maybe considered as a comment on "hep-th/9401067", is to prove the following proposition. PROPOSITION. There exist certain models of Mobilevision, in which interpretational figures are observable only in a multi--user mode in contrast to single--user ones. This result maybe interesting as for applications as for the understanding of theoretical foundations of quantum interactive processes (hep-th/9403015).

James Francis Burke