if liar tell you that he is lieing would you believe him ?
2006-11-26 05:44:05 · 15 answers · asked by assad_joe_haddad 1 in Arts & Humanities ➔ Philosophy
It's neither true or false in FOL if you make truth and falsity into a standard predicate.
Self-referential claims shouldn't be parsed in one object language.
Y is False
Y = (Y is False)
Therefore " this sentence is false" IS false.
But you have to set the semantics up correctly, otherwise it's indeterminate.
Bivalence fails.
2006-11-26 05:49:00 · answer #1 · answered by -.- 4 · 2⤊ 1⤋
Careful! You have to be precise with the liar paradox or it fails to be a paradox. Unfortunately a "liar" is someone who habitually lies rather than always lies - so "I am a liar" fails to be a paradox, he could be a habitual liar who is telling the truth for once in his dishonest life.
Having said that, this is an interesting re-formulation. It does depend on what he is saying he is lying about. If its "this statement is a lie" then you're just back to your standard liar paradox (look it up on wikipedia). If its another statement, say "I've just had sex with Kylie Minogue" and "I was lying then actually" then you are in a confusing situation. I suppose you'd have to decide on the basis of how likely the statement was - on the above I would believe him if he said he'd lied.
2006-11-26 14:11:15 · answer #2 · answered by anthonypaullloyd 5 · 2⤊ 0⤋
A liar is liar, so once he/she has lied he'd have to tell a hundred truths to have a chance for me to believe just one.
2006-11-26 13:52:37 · answer #3 · answered by Anonymous · 0⤊ 1⤋
what's the use talking to a liar your never going to get the truth..
2006-11-26 14:43:04 · answer #4 · answered by Anonymous · 0⤊ 1⤋
one is a liar unless one gets caught
2006-11-26 15:01:04 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Jesus took a liar and a thief, so the answer is, only if it is the same liar, that Jesus took with him, and we are spirits in heaven. ha ha, where G-D is in charge.
2006-11-26 13:52:18 · answer #6 · answered by Anonymous · 0⤊ 2⤋
Thats why we call them liar...
2006-11-26 14:17:34 · answer #7 · answered by lolipop 3 · 0⤊ 1⤋
System error 23.... fizzle... pop! Kaboom!
2006-11-26 13:51:56 · answer #8 · answered by taotemu 3 · 1⤊ 1⤋
why does some fool choose to ask this question EVERYDAY?
please consult previous answers
2006-11-26 14:15:03 · answer #9 · answered by Anonymous · 3⤊ 1⤋
nope.
2006-11-27 07:50:06 · answer #10 · answered by crystal and clover 4 · 0⤊ 0⤋