Masanes-Galley-Müller and the State-Update Postulate
arXiv:2211.03299
Abstract
Masanes, Galley and Müller claim to have derived a unique rule for quantum state update consequent upon a measurement outcome. Upon closer examination, their proof implicitly assumes its first step, namely that the state-update rule is linear.
6 pages; v2: added reply to their reply to my comment, trying to avoid talking past one another