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A bias where one demands “proof” in contexts where absolute proof is impossible or inappropriate, and uses the inevitable failure to provide it as grounds for dismissal. Proof bias often appears in debates about religion, history, or consciousness, where one side demands mathematically certain evidence for claims that can only be probabilistic or experiential. It weaponizes the concept of proof to avoid engaging with reasonable evidence. Proof bias is a close relative of the burden of proof fallacy, but focused on the impossible standard rather than who carries the burden.
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