Rationality and Power
Rationality and Power: Democracy in Practice, subtitled in the original Danish as The Aalborg Project, documented Flyvbjerg's fifteen-year ethnographic study of a single urban planning effort: the redevelopment of central Aalborg, including a bus terminal and traffic reorganization project that appeared, in its technical parameters, entirely straightforward. The case revealed a pattern that no amount of technical analysis could have predicted and no universal planning principle could have accommodated. The outcome was determined not by technical requirements but by power dynamics between the municipal government and the business community, historical patterns of land use, cultural attitudes toward public transportation, and personal relationships between decision-makers — contextual factors that no model could have captured because they were specific to this city, this moment, these particular people. The book established phronetic social science as a methodological alternative and produced the empirical foundation for everything Flyvbjerg subsequently wrote.
In the AI Story
The Aalborg Project had begun in 1977 with the best available planning methodology: rational analysis, stakeholder consultation, expert assessment. By the time Flyvbjerg completed his ethnographic study in 1991, the project had been repeatedly redirected, reshaped, and compromised by political forces that the original technical analysis had treated as external noise. The book's thesis was that these forces were not external but internal to the phenomenon — that power is always already in the room when technical planning purports to operate above politics, and that phronetic analysis must therefore make power an explicit object of inquiry.
The methodological innovation was threefold. First, the study was longitudinal on a scale rarely attempted — fifteen years of sustained engagement with a single case. Second, the study was ethnographic in the anthropological sense — Flyvbjerg embedded himself in the political and administrative structures of the city, attended meetings, interviewed participants repeatedly, and traced decisions through their real-time unfolding rather than through retrospective reconstruction. Third, the study integrated Foucauldian power analysis with Aristotelian virtue ethics, producing a framework capable of describing both what happened and what should have happened.
The book's central empirical finding has the force of paradox: rationality and power are not opposed but mutually constituted. The rationality that prevails is the rationality that power has selected; the power that prevails is the power that rationality has legitimated. The technical analyses that purported to produce optimal outcomes were themselves instruments of particular interests, and the optimal outcomes they identified were optimal only relative to those interests. The pretense of neutral technical expertise was, on Flyvbjerg's account, the most politically consequential fiction in the entire process.
The book's AI-era relevance is that it exposes the mechanism by which apparently neutral technical systems produce politically partial outcomes — the same mechanism now operating at civilizational scale in AI deployment. The claim that AI systems are just tools, politically neutral and evaluable purely on technical grounds, is the Aalborg fiction transposed to silicon. The actual outcomes produced by the tools depend on the power structures in which they are embedded, the interests that shape their design, and the frictionless interfaces that conceal the selection of whose values they serve.
Origin
Flyvbjerg conducted the ethnographic fieldwork between 1977 and 1991 in Aalborg, Denmark. The Danish edition was published in 1991 as Rationalitet og Magt. The English translation, published by University of Chicago Press in 1998, became the reference text for phronetic social science in the Anglophone academy.
Key Ideas
Power is always present. No planning process operates above politics; the pretense of neutrality is the most politically consequential fiction in technical decision-making.
Rationality is situated. The rationality that prevails is the rationality that power has selected; the two are mutually constituted rather than opposed.
Context is constitutive. Aalborg's outcome was produced by contextual factors no universal principle could have captured — the particular mayor, the particular merchant association, the particular history.
Fifteen-year methodology. The depth of engagement made visible patterns that short-term studies systematically miss — the slow unfolding of power relations through technical processes.
Foucault meets Aristotle. The book synthesizes power analysis and virtue ethics into a framework capable of describing both what happened and what should have happened.
Appears in the Orange Pill Cycle
Further reading
- Flyvbjerg, Bent. Rationality and Power: Democracy in Practice. University of Chicago Press, 1998.
- Flyvbjerg, Bent. Making Social Science Matter. Cambridge University Press, 2001.
- Foucault, Michel. Discipline and Punish. Vintage, 1977.
- Forester, John. Planning in the Face of Power. University of California Press, 1989.