Logic0916 - Unifying NGP w 1 2 3 HW solutions Crazy island...

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HW #1 graded (3/3/4 points) HW #2 due 9/21 => 9/23(next Wed - nesday )
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3.5 (HW solution) Will you flash a red card in answer to this question ? C: (flashes black) Will you say yes to this question? Knight: yes/no – both true answer Knave: x (cannot answer)
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Will you flash a red card in answer to this question? C flashed red, and that means something. It established the following correlations. C Red means yes Red means no Knight red /black x (cannot an- swer) Knave x (cannot an- swer) red /black
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Is the defendant innocent? A: (flashes red) B: (flashes black) Are A and C of the same type? B: (flashes red) Innocent or guilty? Since A and B flash different colors to the same question, A and B are of differ- ent types.
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B flashed red to “A=C?” This contradicts the earlier correlations red means yes if and only if C is a Red means yes Red means no A knight B knave C knave C knight A knave B knight C knave C knight
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What does that mean, and how would you answer such a question? Under the conditions of Ch.3, the trial
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Logic0916 - Unifying NGP w 1 2 3 HW solutions Crazy island...

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