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Conditionals is a category for books built around “if–then” thinking—works that explore hypothetical scenarios, branching choices, and the consequences of change. It spans interactive and nonlinear storytelling (such as choose-your-own-adventure and branching narratives), speculative and alternate-history fiction that reimagines events under different conditions, and nonfiction that examines counterfactuals, logic, decision theory, forecasting, and scenario planning. Whether through multiverse tales, philosophical thought experiments, or rigorous analyses of causality and probability, these books invite readers to test possibilities and trace how small shifts can transform outcomes. In short, Conditionals gathers stories and studies that thrive on contingency, exploring the worlds that emerge when we ask “what if?”

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