ok..there are 2 doors, One door always lies, and the other door always tells the truth.?
436204
ask which door the other door would tell you to go throughm then oick the other one - either way it's going to be a lie so pick the other one and you're safe!
782824
Ask one brother which path the other brother will tell you to go down.  Then do the opposite.  Think about it...  if you ask the liar which one the other will tell you to go down, he'll lie about what the truth teller will say, thus giving you the opposite of the right path.
371608
Part 1:\n\nDoes Bob lie?\n\nanswer is yes: You are speaking to Jack\nanswer is no: You are speaking to Bob\n\n\nPart 2:\n\nIs he Bob?\n\nAnswer is yes: Bob is the liar, Jack tells the truth\nAnswer is no: Bob tells the truth, Jack is the liar
836388
A mind is not a door, it is a valve.\n\nIt can only be opened from one side.\n\nYou are asking for a door you can open from the outside, when most of the fundamentalist <atheists/christians/muslims/whoever-the-heck-else-belongs-here> have closed the valve except to shoot out another barb of whatever they believe.
368954
A is a liar no matter what.  If A is speaking the truth by saying "I never speak the truth," then he is calling himself a liar.  If he is lying with that statement, and he does speak the truth then he lied about never speaking the truth.  Once again he is a liar.
525630
Its actually the theory that if the entire universe is made up into 10 gates. The 9th gate is what our particular section is.  The 8th through first gates are not very friendly so we don't talk to them.  The 10th are nice though, so we call them from time to time.
572815
What you are saying is that A, B and C either always tell the truth, or always lie.\n\nLet's assume that A is telling the truth (in family T) when he says "either I belong or B belongs to a different family from the other two".\n\nWe already are assuming that A is in T (truthtellers). So that would mean that B is in the family of F (liars). We can't determine if C is in T or F because in either case, the statement could be true.\n\nOn the other hand, A could be lying (F family) and then his statement would have to be false. So that would mean that B is in the F family also. Again we can't tell what family C is in.\n\nSo the possible combinations are:\n\nABC: TFT\nABC: TFF\nABC: FFT\nABC: FFF\n\nThe best we can tell from this information then is that B must be in the F family (liars). You can't tell anything about A or C without additional statements.\n\nAnswer: B is in the family of liars (F)
1004973
Yes.  They can't say they are a liar if they always tell the truth.  Otherwise, technically, they'd be lying about their honesty and that would make them a liar.
920962
Ask one of them..."If i were to ask your brother which road led to freedom which way would he tell me to go?"\n\nThen you go the other way\n\nIf u ask the one who always tells the truth then he would tell you that his brother would tell you to go down this road and it would lead to freedom...but b/c he lies the road would actually lead back to prison\n\nIf you asked the one that always lies then he would tell you the opposite of what the other guy would say...so he would tell you the road that would lead to the prison\n\n~So which ever way they tell you will lead to prison...so go the other way! lol
408681
This is known as the Monty Hall problem.\n\nIn September 1990, Marilyn vos Savant, puzzle columnist for the U.S. magazine Parade, was sent a probability teaser by a reader. \n\nIts publication in her "Ask Marilyn" column together with her solution has produced much debate amongst mathematicians and laymen alike ever since. \n\nApart from its challenge to common intuition, one reason it has attracted so much interest is that Ms von Savant is listed in the Guinness Book of World Records as having the highest recorded score in an IQ test (228) and so proving her wrong would have a certain satisfaction to it.\n\nTo date, Ms vos Savant has received over 10,000 letters on the puzzle, mostly disagreeable, and articles are still being written claiming new insights that show where Ms vos Savant got it wrong.\n\nMonty Hall was a game show host. There was a luxury car  behind one of 3 doors. The other two doors had goats behind them. Contestants on the show were asked by Monty to choose a door. \n\nHe then opened one of the other doors to reveal a goat and said you could stick with your original choice or switch to the other remaining dooir, if you wanted to. \n\nThat is where this puzzle comes from. The advice is correct. Switching increases the odds from 1/3 rd to 2/3 rds of getting the car. Surprising as that seems. \n\nThink of it this way. Whichever door you choose initially, your chance of success was 1/3 rd. \n\nThen the number of doors is reduced to two. So the chance that the other remaining door is the right one must be 2/3 rds. Because it cannot be the door that has been revealed to have a goat behind it. \n\nWhen you were choosing between three doors, the chance that it was behind one or other of the two doors you didn't choose was 2/3 rds. And it still is, except there is now only one such door left, it having been demonstrated that the other not-chosen door concealed a goat.\n\nIntuition suggests that once one door is eliminated, the chances are 1/2 for each of the two remaining doors, but intuition can be wrong. You can see why the Monty Hall problem generated such controversy, can't you? It has been puzzling and infuriating people for over 15 years now. This one will run and run.
330002
I believe there is logic in everything and everything is created in a logical manner.  Though we may not at once see the logic behind anything, we may at some point discover the rationale behind an event. Yes we can always arrive at the truth through logic.
90393
Yes.  i tell true lies all the time.  One can lie by omission as well as commission.  When someone asks me why i did something, i give them a reason.  Naturally, they assume it is THE reason.  i may have had 9 or 10 diff. reasons, no one said the reason given, was even in the top 5.  It is not nescessarily my MOTIVE, if you follow me.  There are many other examples when you speak in a kind of code, to determine who really GETS you, ya know?
1064422
If you are telling the truth, then the statement, "Everything I tell you is a lie," is a lie itself.  If you are lying, then the statement would actually be true...which brings us back to you telling the truth.  It's all just one big circle that never, ever ends!
383744
Would the other angel tell me this was the way to heaven - if yes, go through the other door, if no, this is the right one.\n\nThis would work because:\n\nIf you are asking the angel who tells the truth and he says yes, it means that his brother (who would lie) would tell you to through this door. Therefore you know it leads to hell. If he says no, then it means his brother would instruct you through the other door and this door must be the correct one.\n\nIf you are asking the angel who lies and he says yes, it means that in actuality his brother would not and therefore this must lead to hell. If he says no, it means his brother would indeed lead you this way and it is the correct gate to heaven.\n\nIsn't that a mouthful!
664969
What you are saying is that A, B and C either always tell the truth, or always lie.\n\nLet's assume that A is telling the truth (in family T) when he says "either I belong or B belongs to a different family from the other two".\n\nWe already are assuming that A is in T (truthtellers).  So that would mean that B is in the family of F (liars).  We can't determine if C is in T or F because in either case, the statement could be true.\n\nOn the other hand, A could be lying (F family) and then his statement would have to be false.  So that would mean that B is in the F family also.  Again we can't tell what family C is in.\n\nSo the possible combinations are:\n\nABC: TFT\nABC: TFF\nABC: FFT\nABC: FFF\n\nThe best we can tell from this information then is that B must be in the F family (liars).  You can't tell anything about A or C without additional statements.\n\nAnswer: B is in the family of liars (F)
750509
Part 1: Nothing\nPart 2: I don't automatically believe everything that is written.\nPart 3: Agreed and  not only is it nonsense, it's not going to happen and the less-aware amongst us perpetuate the myth as they cannot face the reality of life and death without believing in false promises. They may not ever learn the truth, which is a great pity.
732796
Lying won't work.I wanna say the second one is usual and right without objection.