f35-frosh-sem-byzantine-handout

f35-frosh-sem-byzantine-handout - The Island of Liars and...

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Apr. 2011 Byzantine Generals Handout The Island of Liars and Truth-Tellers You meet a woman on the island. What single (yes/no) question can you ask her to determine whether she is a liar or a truth-teller? Setting for puzzles in the next few slides: You are on an island populated by two tribes. Members of one tribe consistently lie. Members of the other tribe always tell the truth. Tribe members can recognize one another, but you can’t tell them apart. You run into a man on the island and ask him whether he is a truth-teller. A blaring siren prevents you from hearing his answer. You inquire, “Sorry, did you say you’re a truth-teller?” He responds: “No, I did not.” To which tribe does the man belong?
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Apr. 2011 Byzantine Generals Handout Meeting Two People on the Island You meet two people A and B on the island. A says, “Both of us are from the liars tribe.” Which tribe is A from? What about B ? You meet two people,
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This note was uploaded on 12/28/2011 for the course ECE 1 taught by Professor Chen during the Fall '08 term at UCSB.

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f35-frosh-sem-byzantine-handout - The Island of Liars and...

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