Ken Arrow

Eric Weinstein

@EricRWeinstein

Arrow's impossibility theorem can be seen as a cohomological obstruction to constructing representative consumers without magical thinking.

2:42 AM · Aug 29, 2009

Eric Weinstein

@EricRWeinstein

There's plenty of beauty in Economics Paul, but that works okay: Coase's Thm, Arrow's Impossibility Thm, Fixed Pt Thms, etc...

9:13 PM · Sep 6, 2009

Eric Weinstein

@EricRWeinstein

VaR -> Kayfabe | Coase -> Economics | Stable Tastes -> Kayfabe | Arrow's Theorem -> Economics | Rep. Consumer -> Kayfabe | B. Scholes-> Econ

12:26 PM · Sep 10, 2009

Eric Weinstein

@EricRWeinstein

Imagine you say to Ken Arrow: "Well you still need a voting system that gets a group to act like an individual." He says: Fuggedaboudit.

9:19 PM · Sep 10, 2009

Eric Weinstein

@EricRWeinstein

Topological Arrow Impossibility theorem for a circle: There is no continuous map from S1xS1 onto its diagonal restricting to the identity.

11:39 PM · Feb 9, 2010

Eric Weinstein

@EricRWeinstein

@disitinerant @tonofbuns @BretWeinstein @primalpoly I’ll take 1 pass at it. Scientists who study optical illusions, cognitive biases, Goedel incompleteness, Arrow’s impossibility theorem etc are tempted to abandon shared objective reality as substrate. Yet these folks cannot be the core. They are the adjustment to shared reality.

6:42 PM · Nov 28, 2017

Eric Weinstein

@EricRWeinstein

Economists: Ken Arrow taught us we can’t aggregate rational preferences into the preferences of a mythical super-individual to represent society.

Also Economists: Konus taught us that Inflation is measured relative to agents’ PERSONAL preferences.

BLS Economists: US CPI is 7.9%

5:10 PM · Mar 30, 2022

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