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From: ken@ihuxq.UUCP (ken perlow)
Newsgroups: net.math
Subject: Re: a logic brain teaser - (nf)
Message-ID: <1165@ihuxq.UUCP>
Date: Fri, 24-Aug-84 20:09:49 EDT
Article-I.D.: ihuxq.1165
Posted: Fri Aug 24 20:09:49 1984
Date-Received: Sat, 25-Aug-84 07:57:43 EDT
References: <219@ur-laser.UUCP>, <28200042@uiucdcs.UUCP>
Organization: AT&T Bell Labs, Naperville, IL
Lines: 16

--
Martin Gardner hacked this 2 roads, 2 persons (1 liar) problem
to death years ago in one of his puzzle books.  The usual answer
given is correct IF the liar is a logical liar, that is, tells
logically false statements, as opposed to a deceitful person.
The devious liar will see through the awkwardly loaded question
and deliberately mislead you.  Gardner's best question for the more
realistic type liar was something like, "I hear there's free beer
at <correct destination>.  Shall we go?"
-- 
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