Relational Quantum Mechanics: A Revolutionary Interpretation

2025-02-11

Relational Quantum Mechanics (RQM) offers a radical departure from traditional quantum interpretations. Instead of focusing on wave functions or quantum states, RQM centers on the values of physical variables, which are inherently relational and only actualized during interactions between systems. This challenges classical assumptions of absolute, always-defined variable values. RQM reinterprets quantum superposition, not as a 'half-alive, half-dead cat,' but as probability distributions influenced by interference effects. It differs from interpretations like Many-Worlds and Bohmian mechanics by emphasizing the relativity of all physical variables and avoiding the measurement problem. While RQM faces criticism, such as potential solipsism arising from its relative perspectives, it provides a novel and thought-provoking approach to understanding quantum mechanics.

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Bayesian Epistemology 101: Credences, Evidence, and Rationality

2025-02-03

This tutorial introduces Bayesian epistemology, focusing on its core norms: probabilism and the principle of conditionalization. Using Eddington's solar eclipse observation as a case study, it illustrates how Bayesian methods update belief in hypotheses. The tutorial then explores disagreements within Bayesianism regarding prior probabilities, coherence, and the scope of conditionalization, presenting foundational arguments like Dutch book arguments, accuracy-dominance arguments, and arguments from comparative probability. Finally, it addresses the idealization problem and the application of Bayesian methods in science.

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