Search found 84 matches

Fri Feb 26, 2016 8:44 am UTC
Topic: 1648: "Famous Duos"
Replies: 44
Views: 8798

Re: 1648: "Famous Duos"

Everything matches up except the extraneous Bill & Ted movie title. It's actually really bugging me.
Mon Sep 14, 2015 1:08 am UTC
Forum: Logic Puzzles
Topic: Anti-Gambler's Fallacy
Replies: 162
Views: 27065

Re: Anti-Gambler's Fallacy

We can get around the certainty issue. Suppose the game is being run by a sufficiently advanced alien, wielding godlike power you can't hope to understand. At the start of the game he tells you that the odds are 70:30 in your favor. He then pulls you aside and whispers to you "We both know I ca...
Thu Sep 03, 2015 7:03 am UTC
Topic: 1572: "xkcd Survey"
Replies: 366
Views: 130267

Re: 1572: "xkcd Survey"

I can never spell definitely without looking it up. I always know it's either "definitely" or "definately", can never remember which, and almost always guess wrong. Even if I take into account that I always get it wrong and thus choose the option that seems wrong at the time, I g...
Fri Jul 17, 2015 7:21 am UTC
Forum: Logic Puzzles
Topic: Rethinking the Prisoner's Dilemma
Replies: 31
Views: 5737

Re: Rethinking the Prisoner's Dilemma

Back on topic: -the other person is exactly as intelligent as me and is in an exactly symmetric situation. -therefore we will make exactly the same decision. -so I am choosing between CC and DD -CC gets me more reward than DD -so I will choose cooperate The problem with superrationality in this inst...
Fri Jul 10, 2015 6:06 am UTC
Forum: Logic Puzzles
Topic: Rethinking the Prisoner's Dilemma
Replies: 31
Views: 5737

Re: Rethinking the Prisoner's Dilemma

You're gonna have to explain your reasoning. I have a feeling that I'll disagree with it.
Wed Nov 02, 2011 4:53 am UTC
Topic: 0972: "November"
Replies: 131
Views: 56514

Re: 0972: "November"

I'm a bit confused. Are some people not always aware of their tongues? I mean, I'm tasting the inside of my mouth at all times. Never a dull moment.
Fri Aug 26, 2011 6:05 am UTC
Forum: Logic Puzzles
Topic: The perfect Chess AI engine
Replies: 89
Views: 42417

Re: The perfect Chess AI engine

Hunches and guesses don't count for much. Many expert players with a great deal of experience in connect 4 believed the game was a draw, until it was solved and shown to be a first-player win. The optimal result of chess under perfect play (white always wins, draw, or black always wins) is simply u...
Wed Apr 06, 2011 4:03 am UTC
Forum: Logic Puzzles
Topic: Mind swapping
Replies: 2
Views: 1731

Mind swapping

This is inspired by an episode of Futurama. I don't know any of the answers myself, but I find the problem interesting. No idea if it's easy or hard. You have a machine that can swap people's minds. It connects to exactly two people at once. Hook it up to person A and person B, for example, and you'...
Wed Mar 23, 2011 4:46 am UTC
Forum: Logic Puzzles
Topic: Infinite Balls and Jugs [solution]
Replies: 611
Views: 120332

Re: Infinite Balls and Jugs [solution]

This can happen in our universe. Ruler and pencil. Yes, I saw that post. That doesn't mean it can happen in our universe. The ruler and pencil example requires infinitely divisible length and matter, as well as infinite precision in both action and observation. That's much closer to reality than th...
Wed Mar 23, 2011 4:17 am UTC
Forum: Logic Puzzles
Topic: Infinite Balls and Jugs [solution]
Replies: 611
Views: 120332

Re: Infinite Balls and Jugs [solution]

Out of all of the unintuitive and seemingly paradoxical problems on the board, this one bugs me the most, by far. I must have been convinced that the jar was empty at some point, because I've posted in this topic effectively saying so, but I guess it didn't stick. So, here's my issue. I'm looking at...
Wed Jan 26, 2011 7:12 am UTC
Forum: Logic Puzzles
Topic: The hardest maze in the world
Replies: 20
Views: 6798

Re: The hardest maze in the world

So, which open problem is this equivalent to?
Tue Jan 25, 2011 12:38 am UTC
Forum: Logic Puzzles
Topic: Bandy Ball
Replies: 20
Views: 3704

Re: Bandy Ball

Well, if you can hit it, say, 32 and 64 yards, then you can never complete the first hole. Should we assume you want the worst combo that can actually finish the course?
Wed Dec 08, 2010 6:15 am UTC
Forum: Logic Puzzles
Topic: Help with a diagram puzzle
Replies: 4
Views: 1924

Re: Help with a diagram puzzle

I started with the six-connection node in the middle. I was able to show pretty easily that it had to be either 5 or 7, but 7 was possible only under extremely specific circumstances (the six surrounding nodes must be 0, 1, 2, 3, 4, and 5), so I explored that avenue first, expecting to easi...
Tue Nov 23, 2010 5:37 am UTC
Forum: Logic Puzzles
Topic: Programmer problem
Replies: 18
Views: 4352

Re: Programmer problem

DROD is pretty amazing. Anyone who enjoys puzzles could do a lot worse than to check it out. I've got to admit, though, I don't know how you would create a puzzle like this within the game's mechanics. Something to do with mimics?
Wed Aug 11, 2010 4:27 am UTC
Forum: Logic Puzzles
Topic: Eight problems for intuition in basic classical mechanics
Replies: 59
Views: 11507

Re: Eight problems for intuition in basic classical mechanic

Well, nevermind then.
Wed Aug 11, 2010 4:20 am UTC
Forum: Logic Puzzles
Topic: Eight problems for intuition in basic classical mechanics
Replies: 59
Views: 11507

Re: Eight problems for intuition in basic classical mechanic

[...]The example I have in mind is a very deep sheer drop, where if the mass is forced to follow the track, will get to the bottom almost instantly,[...] But where would it get the huge amount of kinetic energy it'd take to get to the bottom of the drop almost instantly? I guess it depends on e...
Fri May 21, 2010 10:36 pm UTC
Forum: Logic Puzzles
Topic: Not as easy as 1 2 3
Replies: 56
Views: 14267

Re: Not as easy as 1 2 3

Spoiler:
"I'm thinking of a number. It is either 1.5 or 2.5. Is your number higher than my number?"
Fri May 07, 2010 4:15 am UTC
Forum: Logic Puzzles
Topic: Palindromic Odometer
Replies: 19
Views: 3632

Re: Palindromic Odometer

Spoiler:
At first, it reads 098889, and the distance travelled, 98889, is a palindrome. After 1 km, it reads 098890, and the odometer reading is now a palindrome.
Tue Apr 20, 2010 10:22 pm UTC
Forum: Logic Puzzles
Topic: Coin Flip Sequencing
Replies: 7
Views: 2434

Re: Coin Flip Sequencing

If you have one person flipping coins and stopping as soon as he hits either sequence, then the chance of either sequence being the first one hit is exactly 50%, for the reasons Tunga gave. If you have two different people flipping coins, one of them looking for HTH and one looking for HTT, then th...
Sat Apr 17, 2010 7:09 am UTC
Forum: Logic Puzzles
Topic: Celebrity Problem Puzzle
Replies: 12
Views: 4705

Re: Celebrity Problem Puzzle

I suppose I should be happy that there's still one place on the internet where nobody recognizes Miley Cyrus, but shame on you for not knowing the mad scientist of the Food Network, Alton Brown. He's awesome. Adding the missing letters from those two gives us PLAY DASH. If that's not th...
Wed Apr 14, 2010 5:12 pm UTC
Forum: Logic Puzzles
Topic: Is This Even Possible?
Replies: 77
Views: 27146

Re: Is This Even Possible?

The first answer gives no information beyond identifying one word for yes or no. The yes/no words can be described as "the answer given to the first question" and "the answer not given to the first question", and reducing them to these labels does not remove any information. Sin...
Wed Apr 14, 2010 4:24 pm UTC
Forum: Logic Puzzles
Topic: Is This Even Possible?
Replies: 77
Views: 27146

Re: Is This Even Possible?

I don't believe that argument is correct. The first question may not provide us with any immediate information, but we may learn enough from the other two questions to go back and interpret that first answer. Suppose my first question is asked to A, and goes "Is exactly one of the following tr...
Wed Apr 14, 2010 6:42 am UTC
Replies: 172
Views: 45210

I've gotta admit, the distinction between slashes and backslashes has always seemed completely backwards to me. Naturally, when writing a slash, you start at the top and go down. So... a regular slash starts at the top and goes backwards from there, while a backslash starts at the top and goes forwa...
Tue Apr 13, 2010 9:13 pm UTC
Forum: Logic Puzzles
Topic: Is This Even Possible?
Replies: 77
Views: 27146

Re: Is This Even Possible?

I don't believe that argument is correct. The first question may not provide us with any immediate information, but we may learn enough from the other two questions to go back and interpret that first answer. Suppose my first question is asked to A, and goes "Is exactly one of the following tru...
Fri Feb 26, 2010 3:52 am UTC
Forum: Logic Puzzles
Topic: Is This Even Possible?
Replies: 77
Views: 27146

Re: Is This Even Possible?

In this scenario I would probably manage to create a paradox. I will call them 1, 2, and 3 to explain. If I asked 1 "Would 2 answer my question truthfully?, then asked him the same about 3. and finally asked 2 about 1. One of them would be answering a question about the random one. In that cas...
Sat Jan 23, 2010 7:33 am UTC
Forum: Logic Puzzles
Topic: Is This Even Possible?
Replies: 77
Views: 27146

Re: Is This Even Possible?

It is impossible. Because you are trying to identify each daemon, rather than determine which is a safe door to open (or whatever the goal is of variation of these riddles you prefer), your possible outcomes have gone from 2 to 6. Since there are 3 yes/no questions that can be answered, you...
Wed Jan 06, 2010 10:27 pm UTC
Forum: Logic Puzzles
Topic: 2 puppies
Replies: 132
Views: 18537

Re: 2 puppies

Spoiler:
While I agree that questions like this are usually not worded precisely enough, this one is quite good about that. The OP describes exactly how you obtain the information, and the manner is such that the probability is 1/3.
Tue Jan 05, 2010 3:10 am UTC
Forum: Logic Puzzles
Topic: Value of One Bit
Replies: 26
Views: 4274

Re: Value of One Bit

Ask the genie "Will the total number of heads flipped exceed the total number of tails flipped by at least x, where x is the number of dollars I have, before the total number of tails flipped exceeds the total number of heads flipped by x?" If he says yes, play heads repeatedly until you ...
Wed Dec 23, 2009 2:17 am UTC
Forum: Logic Puzzles
Topic: Little Pigley Farm
Replies: 7
Views: 1655

Re: Little Pigley Farm

It's my own fault. I was originally going to complain that part of the grid had two possible answers, and only realized right before posting that I was wrong. If I'd just read the problem description a little better in the first place, I would have made it in time.
Tue Dec 22, 2009 11:58 pm UTC
Forum: Logic Puzzles
Topic: Little Pigley Farm
Replies: 7
Views: 1655

Re: Little Pigley Farm

Spoiler:
The year is 1935, and the prime factor is 71.
Tue Dec 01, 2009 12:15 pm UTC
Forum: Logic Puzzles
Topic: Are these puzzles too obscure?
Replies: 25
Views: 3810

Re: Are these puzzles too obscure?

puzzle 2:

Spoiler:
(4,3), (5,2), (1,2), (5,6), (5,4), (6,4), (4,6), (1,3) seems like it's worth a try.
Sun Nov 29, 2009 11:38 pm UTC
Forum: Logic Puzzles
Topic: Are these puzzles too obscure?
Replies: 25
Views: 3810

Re: Are these puzzles too obscure?

Without knowing the answers, it's very hard to say whether or not the clues can reasonably lead to them. It looks like there's a good deal of information available, but if you really want an opinion on whether the puzzles are unfair, you should tell us the answers (or wait for us to solve these, but...
Thu Nov 12, 2009 9:35 pm UTC
Forum: Logic Puzzles
Topic: Infinite Balls and Jugs [solution]
Replies: 611
Views: 120332

Re: Infinite Balls and Jugs [solution]

I love the ruler example. So, what happens if we apply that same logic to the case where instead of removing a ball, we relabel it?
Thu Nov 05, 2009 9:33 pm UTC
Forum: Mathematics
Topic: Can anyone maximize this expression?
Replies: 11
Views: 1581

Re: Can anyone maximize this expression?

Are we to assume that our wolves can always find a partner outside the team if possible? That is, if our team has 10 wolves and there are a total of 10 people outside our team, do we disregard the possibility that some of them might match up with each other, leaving some of our wolves unable to earn...
Tue Nov 03, 2009 5:55 am UTC
Forum: Logic Puzzles
Topic: My write-up of the "Blue Eyes" solution (SPOILER A
Replies: 1368
Views: 421052

Re: My write-up of the "Blue Eyes" solution (SPOILER A

I honestly do not understand how people can be arrogant enough to come into a thread like this and say "I'm right, all of you are wrong, and shame on you" without a hint of doubt. Is it really easier to believe that this many pages full of intelligent posts are wrong than to consider that ...
Sun Nov 01, 2009 8:25 pm UTC
Forum: Logic Puzzles
Topic: My write-up of the "Blue Eyes" solution (SPOILER A
Replies: 1368
Views: 421052

Re: My write-up of the "Blue Eyes" solution (SPOILER A

The information the Guru gives is due to the fact that the claim is made in public. Everyone can see that everyone is there to hear it, and everyone can see that everyone can see that everyone is there to hear it, and everyone can see that everyone can see that everyone can see that everyone is ther...
Sun Oct 11, 2009 4:47 am UTC
Forum: Mathematics
Replies: 66
Views: 8330

Well, the problem isn't stated quite well enough to determine things precisely as it stands. For instance, you have no way of knowing under what circumstances the player in the first case would say "I have an ace". When you consider that she later says "I have the ace of spades",...
Fri Oct 09, 2009 6:32 pm UTC
Forum: Logic Puzzles
Topic: My write-up of the "Blue Eyes" solution (SPOILER A
Replies: 1368
Views: 421052

Re: My write-up of the "Blue Eyes" solution (SPOILER A

Can A think B think C think D sees 96? No, because this A's knowledge that C sees 98, and A's knowledge that B knows that C and D can see 98. This simply isn't true. A knows that B, C, and D can see at least 98, A knows that B knows that C and D each see at least 97, and A knows that B knows that C...
Mon Oct 05, 2009 11:26 pm UTC
Forum: Gaming
Topic: Scripted events are killing gaming
Replies: 53
Views: 4644

Re: Scripted events are killing gaming

Personally, I love scripted events. To me, a single-player game is a competition between the creator and the player. He designs obstacles that challenge you in various ways and to various degrees, and you try to conquer them. Immersion is a factor, but not a big one. If you have to sacrifice immersi...
Thu Oct 01, 2009 1:57 pm UTC
Forum: Logic Puzzles
Topic: Betting Game
Replies: 21
Views: 3914

Re: Betting Game

@RaptorJesus: The important point here is that you cannot manipulate the odds. The chances of winning any given game are 20%. This will not change, ever, no matter what you do. Now, it's true that losing five games in a row is somewhat unlikely. I haven't bothered to do the math myself, but Madge sa...