Rational Bias

The cognitive distortion where one's own reasoning is perceived as perfectly objective, simply because it follows internal logical rules, while ignoring that the starting premises, value judgments, and framing of the problem are themselves subjective, emotional, or culturally loaded. It's the bias of believing you're bias-free because you feel coldly logical.

Example: A CEO making a "rational" decision to offshore jobs after a dispassionate cost-benefit analysis. Their rational bias allows them to ignore the premises they accepted without question: that shareholder value is the supreme metric, and that community destruction is an external "cost" not factored in.

by Dumu The Void February 9, 2026

Experiment Bias

The overarching bias that privileges the experimental method itself as the sole arbiter of truth. It assumes that if you cannot isolate, manipulate, and measure a phenomenon in an experiment, it is not a legitimate object of knowledge. This renders history, ethics, love, and justice mere matters of opinion.

Example: Dismissing the concept of systemic racism because "you can't run a controlled experiment on society." Experiment bias confuses one powerful tool for knowledge with the definition of knowledge itself, rendering most of human experience allegedly unknowable.

by Dumu The Void February 9, 2026

RCT Bias

The fetishization of the Randomized Controlled Trial (RCT) as the "gold standard" to the point of dismissing all other forms of evidence, even in fields where RCTs are unethical, impossible, or meaningless. This bias assumes that if you can't randomize it and control it, you can't truly know it, making vast areas of social science and humanities seem illegitimate.

Example: A policymaker rejects a successful, community-developed poverty alleviation program because "there's no RCT proving it works better than a placebo intervention." The RCT bias prioritizes methodological purity over observable, real-world effectiveness, paralyzing action with impossible standards of proof.

by Dumu The Void February 9, 2026

Confirmation Bias Blind Spot

The cognitive inability to recognize one's own confirmation bias while easily detecting it in others. This is the meta-bias that makes confirmation bias so resistant to correction. You can see how your political opponent selectively reads news; you cannot see how you do the same. The blind spot is structural: self-awareness requires a neutral vantage point, but there is no such vantage point. You cannot step outside your own confirmation processes because those processes are what constitute your reasoning.

Confirmation Bias Blind Spot Example: "I read diverse sources and follow the evidence wherever it leads. My opponent, however, lives in an echo chamber." This statement, sincerely believed, is the Confirmation Bias Blind Spot speaking. The speaker cannot perceive the filters they apply—the choice of which "diverse sources" to trust, which "evidence" to weight heavily, which conclusions "logically follow." Their bias is not in their data; it's in their algorithm for processing data. And algorithms cannot see themselves.

by Dumu The Void February 11, 2026

Confirmation Bias of Common Ground

The shared, tacit assumptions that enable communication and cooperation within a group, maintained by collective confirmation. When everyone in a community starts from the same axioms and continually reinforces them through discourse, the axioms become "common ground"—so obvious they need not be stated. This bias is functional: it reduces negotiation costs and enables coordinated action. It is also a prison: it makes the group's foundational premises invisible and unassailable from within.

Confirmation Bias of Common Ground Example: In a corporate meeting, everyone confirms that "shareholder value" is the ultimate goal. This common ground is never debated; it's the platform upon which all other debates happen. An outsider asking "Why maximize shareholder value?" is met with confused silence—they've violated the Confirmation Bias of Common Ground. The group's bias is so deeply shared they've forgotten it's a bias.

by Dumu The Void February 11, 2026

Confirmation Bias of Common Sense

The process by which certain beliefs become elevated to the status of "common sense" precisely because they have been confirmed so often, by so many, for so long, that their confirmation is no longer visible as an active process. Common sense feels like direct perception of reality, not a hypothesis, because its confirmation history is buried in cultural memory. This bias hides the contingency of these beliefs, making alternatives seem not just wrong, but insane. Common sense is the ghost of confirmation bias after it has become invisible.

Confirmation Bias of Common Sense Example: In 1700, it was common sense that the Earth was young and that kings ruled by divine right. These weren't beliefs; they were the backdrop of reality. Questioning them was folly. Today, common sense includes human rights and germ theory. Confirmation Bias of Common Sense reveals that yesterday's common sense was just a massively confirmed hypothesis, and today's will be tomorrow's historical curiosity. The bias is in forgetting that all sense was once nonsense.

by Dumu The Void February 11, 2026

Confirmation Bias Pancognition

The proposition that cognition at every scale, from quantum to cosmic, is fundamentally confirmatory. A particle "chooses" a path that confirms its wavefunction; a cell metabolizes nutrients that confirm its viability; a species evolves traits that confirm its ecological niche; a star fuses elements that confirm its hydrostatic equilibrium. All are instances of systems processing information to reinforce their current state against perturbation. Cognition is not about representing the world accurately; it's about enacting a stable world that confirms the cognizer's existence.

Confirmation Bias Pancognition Example: Your immune system doesn't neutrally catalog all proteins; it aggressively confirms the identity of self-tissues and attacks non-confirming intruders. This is Confirmation Bias Pancognition at the biological level. Your brain's confirmation bias in reasoning is not a departure from biological norms; it's a direct inheritance from your immune cells, your neural pruning, your metabolic pathways. All cognition is immunological.

by Dumu The Void February 11, 2026