Imperfect Voting Systems

A game-theory-sequence explainer of social choice. The agenda-setting manager example is the pedagogical highlight: with three managers holding cyclic preferences over (no award / $50 certificate / $10,000), the secretary arranging the meeting can produce any of the three outcomes purely by ordering the votes — real power lies with whoever sets the agenda. Then strategic voting in the US two-party system (Nader spoiling Gore in Florida 2000), STV/instant-runoff (Ireland) and Condorcet voting (with its rock-paper-scissors cycles), and the punchline that no system escapes tactical voting — Gibbard-Satterthwaite and Arrow's impossibility theorem prove the desirable criteria are mutually incompatible (barring random or dictatorial methods). The British AV referendum illustrates that system choice is usually political self-interest.

Quality 70 · Strong. Strong-ish explainer. Accessible, well-organized coverage of agenda manipulation, strategic voting, and the impossibility theorems, anchored by the excellent manager-award example. Pure exposition of established social-choice theory, so it sits just above the textbook-primer line.

Claude’s paradigm shift 32 · Slight. Slight-moderate — Arrow and Gibbard-Satterthwaite are long-established; the value is lucid exposition, not novelty.

Real-world impact 2 · Minor. An accessible explainer of established social-choice theory (agenda manipulation, strategic voting, impossibility theorems); spreads understanding within the community but moved no electoral law or practice → RWI 2.