In response to my query about why she changed her mind, she appealed to genetics, background forces, and environmental factors. In other words, she believed there is no free will because external forces determine beliefs. What she didn’t realize was that the justification she offered for her belief in determinism undermined her deterministic beliefs. She believed that she had evaluated the evidence and embraced the position—determinism—that is most logical. And yet if determinism were true she would have been incapable of evaluating evidence and freely following the logic because all her choices were already set. Logically speaking, her position was self-refuting. In other words, she sawed off the branch she was sitting on.