Definitions by Dumuabzu

Rational Groupthinking

The illusion of consensus achieved through a process that appears rigorously rational. The group uses shared tools—cost-benefit analyses, decision matrices, weighted voting—but the inputs (assumptions, criteria, data selection) are unconsciously shaped by shared biases. Because the process feels objective, the outcome is unquestioned. This is common in corporate boards, engineering teams, and policy think tanks.

Rational Groupthinking Example: A tech company's board uses a sophisticated scoring system to decide which project to fund. All members agree on the rational criteria (market size, development cost). However, their Rational Groupthink leads them to all weight "market size" based on the same Silicon Valley hype-cycle reports, causing them to unanimously invest in a metaverse project that ultimately flops, while ignoring a less-hyped but solid AI tool.

Rational Groupthinking by Dumuabzu February 5, 2026

Rationalothinking

The groupthink of self-proclaimed rationalist or "skeptic" communities, where the performance of rationality (using specific jargon, invoking Bayesian probability, dismissing emotion) becomes more important than the substance of truth. The group develops orthodox beliefs about topics like AI risk, effective altruism, or libertarianism, and deviations are dismissed as "irrational" or "motivated reasoning." The shared identity as "rationalists" prevents rational scrutiny of their own sacred cows.

Example: In an online rationalist community, a member questions the group's orthodoxy about the near-term certainty of superhuman AI. They are immediately flooded with responses citing Yudkowsky, Bostrom, and complex probability notation. This Rationalothinking uses the aesthetic of rationality to enforce conformity, attacking the questioner's in-group status rather than engaging the argument on its merits.

Rationalothinking by Dumuabzu February 5, 2026

Debunkothinking

The reflexive, group-enforced mindset where the primary goal in any discussion is to "debunk" or expose flaws in opposing claims, while exempting one's own side from similar scrutiny. The group's identity is built on a sense of superior skepticism, but this skepticism is applied only outwardly. This creates a culture of gotchas and nitpicking that stifles genuine inquiry and protects the group's own assumptions from examination.

Example: In a subreddit dedicated to debunking pseudoscience, any mention of a poorly-understood medical phenomenon (e.g., chronic fatigue syndrome) is met with immediate Debunkothinking. The group rushes to label it "psychosomatic" or "malingering," citing old, flawed studies, while dismissing newer biomedical research as "fringe." Their shared mission to debunk has hardened into an orthodoxy that itself ignores evidence.

Debunkothinking by Dumuabzu February 5, 2026

Logical Groupthinking

Similar to Logthinking, but focused on the social enforcement of logical formalism as the only permitted mode of discourse within a group. The group develops a shared dialect of syllogisms and fallacies, using it as a cudgel to win arguments rather than a tool to find truth. Appeals to experience, values, or practicality are ruled "illogical" and out of bounds, creating a sterile, hyper-rationalized echo chamber that is often logically sound but humanly obtuse.

Example: In a philosophy debate club, a member argues for compassion in ethics from a phenomenological perspective. They are swiftly shut down by the club's president: "Your argument commits the appeal to emotion fallacy. Until you can present a formal deontological or utilitarian syllogism, you have no valid point." This Logical Groupthinking privileges form over substance, ensuring only one style of thinking can be heard.

Logical Groupthinking by Dumuabzu February 5, 2026

Community Gene Theory

The concept that a community—whether biological (like a coral reef) or human (like a neighborhood)—possesses inheritable, mutable units of cultural, behavioral, or structural information that function analogously to biological genes. These "community genes" or memes/traditions (e.g., a shared irrigation practice, a conflict-resolution ritual, a design for communal housing) are passed down, recombined, and mutated across generations of community members. The theory applies evolutionary logic to social cohesion, suggesting communities evolve by retaining adaptive "genes" and discarding maladaptive ones.

Community Gene Theory Example: An intentional eco-village has a "community gene" for a weekly shared meal where disputes are aired and resolved. This tradition (a behavioral gene) is passed to new members, mutates (maybe becoming a bi-weekly meeting), and proves adaptive by reducing internal strife. A neighboring village without this "gene" fractures over unresolved conflicts, demonstrating Community Gene Theory in action.

Community Gene Theory by Dumuabzu February 5, 2026

Community Evolution Theory

The study of how communities change and diversify over time through processes analogous to biological evolution: variation in practices, inheritance of successful norms, and selection pressures from the environment (both physical and social). It posits that communities are not static, but are subject to evolutionary forces where external challenges (resource scarcity, conflict) and internal innovation lead to the "descent with modification" of social structures, with some community forms thriving and others going extinct.

Community Evolution Theory Example: The Amish communities in North America exhibit Community Evolution. Faced with the selection pressure of modern technology, variations emerged: some groups strictly prohibit the grid ("Old Order"), others allow limited tech for business ("New Order"). These "speciated" community types inherit and modify core traditions, showing evolutionary adaptation to a changing cultural environment.

Community Evolution Theory by Dumuabzu February 5, 2026

Community Selection Theory

A specific mechanism within community evolution where the fitness of the entire group, not just individuals, becomes the primary unit of selection. Communities with traits that enhance cooperation, resource sharing, and collective defense outcompete or out-survive more selfish or disorganized groups, even if those traits come at a cost to individual members. The theory asks: do communities evolve because it benefits the individuals, or because some communities are simply better at persisting as wholes?

Example: Military units or firefighting crews operate under Community Selection Theory. The unit that drills for self-sacrifice and flawless coordination (a group-level trait) will survive a battle or fire where a group of individually talented but uncoordinated people would perish. The cohesive group is "selected for," even though the trait (readiness for sacrifice) lowers individual fitness.

Community Selection Theory by Dumuabzu February 5, 2026