<p>Steeger (<i>Synthese</i> 200(2), 2022) has recently claimed that Bohmians are able to make use of the Deutsch-Wallace derivation of quantum-mechanical chance values. I argue that Steeger’s proposal does not succeed, but a close cousin of it—for de Broglie-Bohm epistemic probabilities—does. This clarifies the relationship between Born rule probabilities in Everettian quantum mechanics and de Broglie-Bohm theory, as well as the scope of the Deutsch-Wallace theorem.</p>

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Many worlds or one: reply to Steeger

  • Eleanor March

摘要

Steeger (Synthese 200(2), 2022) has recently claimed that Bohmians are able to make use of the Deutsch-Wallace derivation of quantum-mechanical chance values. I argue that Steeger’s proposal does not succeed, but a close cousin of it—for de Broglie-Bohm epistemic probabilities—does. This clarifies the relationship between Born rule probabilities in Everettian quantum mechanics and de Broglie-Bohm theory, as well as the scope of the Deutsch-Wallace theorem.