There are basically three versions of determinism: logical, theological, and physical (see fig. 10.1). In all versions of determinism, the future is fixed by some determining factor. With logical determinism, the determining factor is the fact that propositions about the future are already true or false. Consider the act of reading Harry Potter and the Sorcerer’s Stone on your twelfth birthday. One hundred years prior to your twelfth birthday, the proposition P, “You will read Harry Potter
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