Akerlof 1970 — "The Market for Lemons"; asymmetric information can collapse markets (Nobel 2001)

Claim. Asymmetric information — where one party to a transaction knows more than the other — can drive high-quality goods out of the market. The informed side has structural advantage by definition; the spine concept for any "information edge" argument.

Source. George A. Akerlof, "The Market for 'Lemons': Quality Uncertainty and the Market Mechanism," Quarterly Journal of Economics 84(3): 488-500 (1970). Nobel Prize in Economics 2001 awarded jointly to Akerlof, Michael Spence, and Joseph Stiglitz "for their analyses of markets with asymmetric information" (Econlib biography; Wikipedia "The Market for Lemons," accessed 2026-06-21).

Confidence. Verified. Academic, no incentive taint. The Nobel adds authority but the underlying mechanism is independent of the citation count.

Caveats. The original was about adverse selection in used-car markets — the generalisation to "any information advantage is the counterparty's disadvantage" is a logical extension, not Akerlof's specific demonstration. Honest framing keeps that distinction.

Implication / use. The spine of the whole brief. An information advantage is, by definition, the other side's information disadvantage. Every decision-domain claim in the brief is a specific instance of this general principle.