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Reasoning error · logic
A false dichotomy frames a question as an either/or choice even though the evidence allows additional explanations, mixed states, degrees, or uncertainty.
Explore connections →Some questions really are binary: a switch is on or off; a document either contains a clause or it does not. The error is imposing binary structure where the underlying phenomenon is not binary.
Claim by Claim often needs a third answer—misleading, inconclusive, partly supported, multiple causes—not because of indecision but because the evidence is not two-valued.
Research basis
Develops and validates a measure of black-and-white cognitive style, distinguishing preference for dichotomy and related dimensions.
Investigation ↔ Learn
Controlled experiments in 2025 and 2026 measured genuine low-energy deuterium-fusion enhancements in externally powered apparatus, but neither demonstrated useful net energy or an independently replicated practical generator. Public research funding also contradicts the blanket suppression narrative.
Multinational laser ranging contradicts satellite nonexistence. Terrestrial networks and balloons are real, but a claim that they provide most services requires a specified service, geography, time and denominator.
Randomized and observational evidence is heterogeneous and effect size is uncertain, but the record does not support a universal 'masks did nothing' claim. Benefits vary by mask type, adherence, setting and whether source control or wearer protection is measured.
Terrain theory is sometimes used to claim that germs are bystanders rather than causes of infectious disease. Host immunity, genetics and microbiome do shape outcomes, but they do not replace pathogen causation. Infection science considers microbes, hosts and environment together.