This is a response to a critical review of the author book 'Non-locality and Possible Worlds' (Ontos Verlag, Frankfurt 2006) by Witold Strawinski. The author presents arguments why counterfactual conditionals are needed in the description of quantum-mechanical phenomena, and in particular in the analysis of the condition of locality. He rebuts arguments against his choice of the relation of similarity between possible worlds offered by W. Strawinski and M. Dickson. In the later part of the article he addresses some other issues raised by critics, such as the problem of the truth value of the antecedents of true counterfactuals, the problem of the semantic relation between sentences and events, and various shortcomings of his formulations of the condition of locality. In response to the specific criticism of the definition of free-choice events, he agrees with the charge that his definition is satisfied by all actual events. The author presents a correction to the definition which uses the distinction between actual events and merely possible events.
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