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The subject of this paper is the notion of similarity between the actual and impossible worlds. Many believe that this notion is governed by two rules. According to the first rule, every non-trivial world is more similar to the actual world than the trivial world is. The second rule states that every possible world is more similar to the actual world than any impossible world is. The aim of this paper is to challenge both of these rules. We argue that acceptance of the first rule leads to the claim that the rule ex contradictione sequitur quodlibet is invalid in classical logic. The second rule does not recognize the fact that objects might be similar to one another due to various features.
EN
The article discusses the possibility of strengthening Bell's theorem by eliminating the premise of determinism from the derivation of Bell's inequality. A recent argument due to H. Stapp purporting to derive a contradiction with the quantum-mechanical prediction from the counterfactually interpreted assumption of locality is critically analyzed. An alternative derivation is proposed, which is based on the assumption of locality, as well as Einstein's criterion of physical reality.
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