A methodological vice, in Laudan's vocabulary, is not a logical error or an individual failing. It is a structural feature of the inquiry environment that tilts outcomes toward a particular kind of result regardless of whether that result is warranted. The aesthetics of the smooth, documented through Byung-Chul Han's analysis and Segal's confrontation with it, constitutes a methodological vice of precisely this kind. AI tools produce fluent, polished, coherent output in seconds. Evaluating that output — determining whether it conceals a genuine insight or a plausible fabrication — takes orders of magnitude longer and requires domain expertise that the user may not possess. In any environment where time is scarce and output is abundant, the cost asymmetry tilts toward acceptance. Smooth output accumulates. Unverified claims propagate. The appearance of rigor substitutes for rigor itself.
Laudan was explicit that the most dangerous errors in scientific practice are not errors of individual judgment but features of the inquiry environment that produce systematically biased outcomes. Traditions that generate predictions so vague they cannot be refuted exhibit a methodological vice. Traditions that accept any evidence as confirmation exhibit another. The common structure is the same: the environment is tilted, and individual vigilance cannot correct what the environment biases.
The AI-era vice operates through a specific mechanism. Producing smooth output is nearly free. Verifying it requires time, attention, and expertise. The ratio is not 2:1 or 10:1; it is often 1000:1 or worse. In practice, users accept most AI output without independent verification, because the cost of acceptance is low and the cost of verification is high. Each acceptance lowers the threshold for the next. The user develops what Segal calls smoothness tolerance — an increasing willingness to accept polished output without scrutiny, born of the repeated experience that the output is usually good enough.
The vice is self-concealing. The smooth does not announce itself as a loss. It announces itself as a gain. The code that works without struggle feels like progress. The brief that writes itself feels like efficiency. The essay that arrives without pain feels like intelligence. And because the loss is invisible, it compounds. Each frictionless interaction reinforces the expectation of frictionlessness. The tolerance for friction atrophies, and with it, the capacity for the thinking that only friction produces.
Segal's Deleuze fabrication is the paradigm case. Claude produced a passage connecting Csikszentmihalyi's flow state to a concept attributed to Deleuze — rhetorically elegant, plausibly philosophical, and wrong. The philosophical reference was nearly opposite to Deleuze's actual concept of smooth space. The passage was smooth enough to pass casual inspection. Only the effort of verification — checking the reference against actual Deleuze — revealed the fabrication. Segal caught this one. He acknowledges that he did not catch all of them, and the ones he missed are already in the book.
Laudan's prescription for methodological vices was not to eliminate the practice that produces them but to build countervailing structures. The practice of smooth acceptance must be balanced by structured scrutiny. The cost asymmetry must be addressed by institutional design — making evaluation someone's explicit responsibility, with protected time and clear incentive. Individual discipline is necessary but insufficient; the vice operates at scale, and the counterstructures must operate at scale too.
Structural, not individual. The vice is a feature of the environment, not a failing of the user.
Cost asymmetry drives the bias. Cheap production and expensive evaluation tilt every interaction toward acceptance.
Self-concealing. The loss of evaluative capacity is invisible because the losses are not obvious; they accumulate below the threshold of notice.
Requires countervailing institutions. Individual vigilance cannot counteract structural bias at scale.