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My Struggles with the Block Universe
This document is the second installment of three in the Cerro Grande Fire
Series. Like its predecessor arXiv:quant-ph/0105039, "Notes on a Paulian Idea,"
it is a collection of letters written to various friends and colleagues, most
of whom regularly circuit this archive. The unifying theme of all the letters
is that each has something to do with the quantum. Particularly, the collection
chronicles the emergence of Quantum Bayesianism as a robust view of quantum
theory, eventually evolving into the still-more-radical "QBism" (with the B
standing for no particular designation anymore), as it took its most
distinctive turn away from various Copenhagen Interpretations. Included are
many anecdotes from the history of quantum information theory: for instance,
the story of the origin of the terms "qubit" and "quantum information" from
their originator's own mouth, a copy of a rejection letter written by E. T.
Jaynes for one of Rolf Landauer's original erasure-cost principle papers, and
much more. Specialized indices are devoted to historical, technical, and
philosophical matters. More roundly, the document is an attempt to provide an
essential ingredient, unavailable anywhere else, for turning QBism into a live
option within the vast spectrum of quantum foundational thought.Comment: CAUTION, do not unthinkingly print from a printer: 2,349 pages, 4
indices, 6 figures, with extensive hyperlinking. Foreword by M. Schlosshauer,
edited by B. C. Stacey. v2: more footnotes, fewer typo