Atheist Defaultism

A bias where atheism (the lack of belief in deities) is treated as the default, neutral, or rational starting point, and any theistic or spiritual belief is seen as an aberration requiring special justification. Atheist defaultism often assumes that without evidence, disbelief is the only reasonable stance, and that the burden of proof lies entirely on believers. While this mirrors some philosophical positions, the bias lies in treating atheism as an unmarked category (just “normal”) while theism is marked as “belief.” It often ignores that everyone has metaphysical commitments, including atheists.

Example: “He introduced himself as ‘just a normal person’ while calling religious believers ‘superstitious’—atheist defaultism, treating his own worldview as the neutral baseline.”

Atheist Defaultism by Abzugal April 18, 2026