QBism, Quantum Nonlocality, and the Objective Paradox

TL;DR

This paper critiques QBism's claim to resolve quantum nonlocality, arguing that nonlocality is an objective fact, and discusses how avoiding paradoxes can weaken an interpretation's explanatory power.

Contribution

It introduces the concept of 'objective paradox' and compares QBism with Copenhagen to show the importance of acknowledging paradoxes for better explanations.

Findings

Quantum nonlocality is an objective experimental fact.

Avoiding paradoxes can lead to weaker explanatory power.

QBism does not eliminate the reality of nonlocality.

Abstract

The Quantum-Bayesian interpretation of quantum theory claims to eliminate the question of quantum nonlocality. This claim is not justified, because the question of non-locality does not arise due to any interpretation of quantum theory, but due to objective experimental facts. We define the notion "objective paradox" and explain, comparing QBism and the Copenhagen interpretation, how avoidance of any paradox results into poor explanatory power of an interpretation, if there actually exists an objective paradox.