Running summarizing tools on a new article

Abstract: I argue that the usual rules of quantum mechanics on measurement outcomes have to be complemented with (or rather, understood to include) the condition that observers who are themselves going to be subject to measurements in a linear combination of macroscopic states cannot make reliable predictions on the results of experiments performed after such measurements. Quantum mechanical rules completed with this condition lift the paradox identified by Frauchiger and Renner and become fully consistent.