This is the final exam for Preference Falsification. It pulls together the whole course: the gap that opens between what people privately believe and what they publicly profess when honesty is costly; the three payoffs that break revealed preference; the cost of dissent as the engine, the dictator’s paradox, and the pluralistic ignorance that lets a private majority feel like a lonely minority; the preference cascade that flips a rock-solid consensus overnight (and why 1989 blindsided everyone); the persistence trap that freezes unloved norms for years and rots the very knowledge leaders reason from; and finally the model’s limits, its self-serving misuses, and the cure — institutions that lower the price of speaking honestly. Several questions look easy until you notice a trap: that a quiet room proves a hidden majority, or that measured consensus equals real consensus. Reason each one through.
How this exam works
Read carefully — this exam is final. Each question appears one at a time. Once you submit an answer it is locked for good: there’s no going back, no retry, and no restart. Your score is hidden until the end, where you’ll see a pass/fail verdict. The pass mark is 70%. A few questions ask you to select all correct answers.
What is preference falsification, in Timur Kuran's precise sense?
Select an answer to continue.
Course Recap
Big picture
Preference falsification, in one picture
- Preference Falsification
- The two preferences & the gap
- Private (what you truly want) vs public (what you voice). When honesty is costly, they split — that gap is falsification, NOT belief change, and it breaks revealed preference. Three payoffs: honesty, reputation, expressive influence.
- Cost of dissent & pluralistic ignorance
- The cost of dissent is the engine. Dictator's paradox: repression raises measured agreement while hollowing real support. A hidden private majority mistakes itself for a lonely minority — mutual knowledge, but not common knowledge, so no one moves first.
- The preference cascade (1989)
- Personal thresholds: a few first movers lower the cost for others → dominoes flip a rock-solid consensus overnight. The tipping point is invisible in advance (sensitivity). The Eastern Bloc fell in weeks and almost no one saw it coming.
- The persistence trap & knowledge distortion
- The same silence freezes unloved norms and bad policy for years. Suppressed dissent rots the public record, so even leaders reason from fake info — and the missing arguments make dissenters doubt themselves. Persistence and suddenness are ONE mechanism.
- Limits & the cure
- Not every silence hides a majority; beware the self-serving "everyone secretly agrees with me"; falsification runs both ways; measured opinion is noisy. The cure lowers the cost of honesty: secret ballots, anonymity, red teams, premortems, leaders speaking last.
- The two preferences & the gap
Key takeaways
Preference falsification is the wedge between what people privately believe and what they publicly profess when honesty is costly — and it is a gap, not a conversion, so it quietly breaks the assumption that behavior reveals preference. The cost of dissent is the engine: crank it up and you get the dictator’s paradox (loud, hollow, untrustworthy agreement) and pluralistic ignorance (a private majority each member mistakes for a lonely minority, because the objection is mutual knowledge but never common knowledge). Hidden preferences stack up behind personal thresholds, which is why a small drop in the cost — or a few brave first movers — can trigger a cascade that flips an “eternal” consensus in weeks, as it did across the Eastern Bloc in 1989, invisibly, right up until it happened. The same silence that makes collapse sudden is what makes bad norms persist for years, and worse, it distorts the shared knowledge everyone — leaders included — reasons from. But hold the model honestly: not every silence hides a majority, “everyone secretly agrees with me” is a seductive excuse, falsification runs both ways, and measured opinion is noisy. The cure is always the same move — build institutions that lower the price of honesty: secret ballots, anonymity, red teams, premortems, and leaders who speak last. Watch the cost of dissent, and never mistake a quiet room for a settled one.