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Quiz 1 bonus question 11. “At least half of the people taking this quiz will label this statement ‘true’.” 9 out of 9 answered “true”! Everyone was right! If everyone had answered “false”, that would have been right, too…. 0. 1. 2. 3. 4. 5. 6. 7. 8. 9. # true.
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Quiz 1 bonus question 11 • “At least half of the people taking this quiz will label this statement ‘true’.” • 9 out of 9 answered “true”! • Everyone was right! • If everyone had answered “false”, that would have been right, too… 0 1 2 3 4 5 6 7 8 9 # true pure-strategy equilibria • A (symmetric) mixed-strategy equilibrium: everyone plays “true” with probability ½
Quiz 1 bonus question 12 • “At least half of the people taking this quiz will label this statement ‘false’.” • 5 out of 9 answered “false” • Those 5 were wrong, because they made the statement true. • Of course, there had to be at least 5 wrong answers (why?), so overall the class did as well as it could have… 0 1 2 3 4 5 6 7 8 9 # false pure-strategy equilibria • A (symmetric) mixed-strategy equilibrium: everyone plays “true” with probability ½