Definitions by Abzugal
Rationalist Fanaticism
The fanatical wing of the rationalist community (LessWrong, effective altruism, etc.), characterized by extreme confidence in their own cognitive methods, aggressive evangelism, and strict purity tests. Rationalist fanatics treat Bayes’ theorem, decision theory, and futurist forecasts as sacred texts. They excommunicate members who question core beliefs (e.g., AI risk, longtermism) and attack outsiders who don’t adopt their jargon. Their fanaticism often manifests in cult‑like dynamics: epistemic arrogance, insularity, and a conviction that they are saving the world from irrational destruction.
Example: “When she asked about the ethics of their charity allocation, he said her reasoning wasn’t ‘properly Bayesian’ and banned her—rationalist fanaticism, mistaking a tool for orthodoxy.”
Rationalist Fanaticism by Abzugal May 2, 2026
Rational Fanaticism
A zealous, intolerant belief in the power of “pure reason” to solve all problems, combined with contempt for emotion, intuition, tradition, and embodiment. Rational fanatics see themselves as the vanguard of rationality and everyone else as slaves to bias. They advocate for rational decision‑making in every domain (love, art, politics) and dismiss any outcome that violates their calculations as irrational. Their fanaticism leads them to override human needs (e.g., insisting on “optimal” policies that cause suffering), because they believe the rational solution must be correct regardless of real‑world consequences. It’s rationality as religion.
Example: “He argued that grief counseling was inefficient and should be replaced by a decision tree—rational fanaticism, sacrificing compassion on the altar of abstract reason.”
Rational Fanaticism by Abzugal May 2, 2026
Analytic Fanaticism
A dogmatic commitment to the methods, style, and assumptions of analytic philosophy, often accompanied by dismissal of all other philosophical traditions (continental, eastern, indigenous) as “nonsense” or “not real philosophy.” Analytic fanatics treat formal logic as the only legitimate tool, clarity as the highest virtue, and any departure from their conventions as intellectual failure. They engage in purity tests, denounce “obscurantism,” and react to alternative approaches with hostility rather than curiosity. This fanaticism reduces the rich diversity of philosophy to a narrow technical discipline, losing the depth that other traditions offer.
Example: “He refused to read any philosopher before Frege, declaring them ‘pre‑analytic rubbish’—analytic fanaticism, mistaking one school of thought for philosophy itself.”
Analytic Fanaticism by Abzugal May 2, 2026
Skeptical Fanaticism
A rigid, intolerant form of skepticism that treats doubt not as a tool but as a weapon. Skeptical fanatics apply skepticism only to claims they already disbelieve, never to their own assumptions. They demand impossible evidence from others while offering none for themselves, and they attack anyone who questions their favored authorities or methods. Unlike genuine skepticism (open, self‑reflective), skeptical fanaticism is closed and dogmatic—its “doubt” is a performance of superiority, not an honest inquiry. Online communities built on this fanaticism become echo chambers where any dissenting evidence is labelled “woo” or “conspiracy.”
Example: “He dismissed every study she provided as ‘flawed,’ then refused to provide any sources for his own claims—skeptical fanaticism, using the posture of doubt to avoid real debate.”
Skeptical Fanaticism by Abzugal May 2, 2026
Secular Fanaticism
Zealous, intolerant advocacy for secularism, often crossing into demand for the total absence of religion from public life. Secular fanatics argue that any religious symbol in government spaces, any faith‑based school funding, or any religious accommodation is unacceptable. They treat secularism not as a pluralistic framework but as an ideological weapon to suppress religious expression. Their rhetoric often mirrors the religious extremists they oppose: purity, suspicion of compromise, and a belief that the enemy must be completely vanquished. This fanaticism alienates potential allies who value secularism but also respect religious freedom.
Example: “He demanded that all religious symbols be removed from public hospitals, even patient prayers requested by families—secular fanaticism, trampling religious liberty in the name of neutrality.”
Secular Fanaticism by Abzugal May 2, 2026
Irreligious Fanaticism
A broader term for fanatical devotion to secularism, non‑belief, or the rejection of all religious and spiritual frameworks. Unlike atheist fanaticism (focused on gods) or antitheist fanaticism (focused on destroying religion), irreligious fanaticism can include agnostics, secular humanists, or anyone who elevates non‑belief into a burning cause. It manifests as aggressive pushback against any public display of faith, any mention of spirituality in polite company, or any suggestion that non‑scientific ways of knowing have value. Irreligious fanatics treat neutrality as betrayal and demand constant performative rejection of the “supernatural.”
Example: “She filed complaints against every teacher who mentioned prayer in class, even when discussing it historically—irreligious fanaticism, turning the absence of belief into a crusade.”
Irreligious Fanaticism by Abzugal May 2, 2026
Antitheist Fanaticism
A more extreme version of atheist fanaticism, where the goal is not just disbelief but the active destruction of religion. Antitheist fanatics argue that religion must be eradicated, often by any means necessary: ridicule, legal restriction, social exclusion, or even violence. They see any accommodation of religion as appeasement, any religious act as an offense. Their rhetoric is absolute: “religion poisons everything,” “faith is a mental illness,” “the world would be better without any gods.” This fanaticism leaves no room for respectful coexistence, framing religious people as enemies to be defeated.
Example: “He cheered when churches burned during protests, calling it ‘a start’—antitheist fanaticism, treating religion as an enemy that deserves no quarter.”
Antitheist Fanaticism by Abzugal May 2, 2026