On Grandma Quantum's Nonexistent Wheels: The Causal Efficacy of Quantum Non-Events and their Significance



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PIRSA Number: 
16060105

Abstract

Among QM's (in)famous oddities, perhaps the most intriguing is the capability of an event that did not occur, only could have, to exert a causal effect. How can a non-event leave a trace as concrete as a detector's click? I discuss this question and a novel insight into it offered by Cohen and Elitzur's "Quantum Oblivion" (20014).