A brief introduction to the Foundations of Quantum Theory and an analysis of the Frauchiger-Renner paradox

Abstract

This is a short text covering some topics on the Foundations of Quantum Theory and it includes some comments on the recent Nature article by D. Frauchiger and R. Renner. The so-called "paradox" is simply due to a misunderstanding on the appropriate way to apply the quantum mechanical rules. The text is meant to be accessible to non physicists and the math is kept to a minimum (just some Linear Algebra and extremely elementary Probability Theory).

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