/sci/ - Science & Math

>asks how smart we are
>gives us impossible problem
>noface

He should walk in the opposite direction to the robot.

>Traveller pulls out his Android phone
>GPS
>Continues on his merry way

>>3940209
>>3940217
>>3940219

you all are the cancer killing this board.

seems like a reasonable question, op. out of my depth, though.

Ask what the coin is made of and which route he should take.

It just says he responds truthfully, not that there is a limited number of questions per coin

>>3940234
>Ask what the coin is made of

But he can lie about that.

>>3940234
>implying its not implied

Ask what fork he would advise you NOT to take if you had inserted a coin made of a metal from the other category.

>>3940246
Ask if he is a robot, THEN ask which direction to go.

Wait, if the robot can just lie and say "I don't know" to anything, we're fucked.

What is the robot made of? Any magnets? (srs question)

What if you were to ask a hypothetical question within a question?

Like:
>If I were to ask ..., what would you say?

>>3940266
he only has one coin

>>3940266
I assume it means polar opposite lie, as opposed to feigning ignorance--in which case, it would be impossible.

"if you are lying, which rout should i NOT take?"

i remember a problem along those lines with three gods that only said yei or nei.

Titanium is non-magnetic. Break the fucking robot and acquire the magnets.

>>3940270

this feels like its on the right track...

Steel and nickel are ferromagnetic. If the traveler has a magnet he can determine the coin and anticipate the robot's answer.

I cant believe /sci/ cant do this

>>3940290
Or he could tell the robot that if he lies he'll kill him with the magnet

>>3940281
has it. other variations solve as well.

>>3940284
>>3940290
>mfw

>>3940301

I'm not getting it. Explain?

Ask if the robot is a robot, and then ask what direction to take. You know which direction to take based on the brobot's first answer.

>>3940308
shit just got real

>>3940308
implying you may ask 2 questions.

>>3940308
1 coin = 1 answer

>>3940308
>>3940266
i don't think you necessarily need to ask specifically if he's a robot though. anything that you know to be fact (is the grass green? what is 1 +1?) can be used

/sci/...i am disappoint.

OP here.

This guy:
>>3940270
is close. You need a multi-layered approach in your question.

The traveller busts the robot open with a rock and takes all the coins inside of it and then just picks a path like everybody else on every non-robot path made ever would have done

"if i inserted a titanium coin, is the left way the right one?"
no matter the answer, youll know where to go.

>>3940338
"if i inserted a titanium coin, would you be lying if you told me to go right?"

Step 1: Find magnet
Step 2: Test magnet on coin
Step 3: Ask the robot which way to the city. If the coin attracted, take the robot's advice. If not, take the opposite advice.

>>3940346
>>3940290
>>3940284
>>3940269

Guys... shut the fuck up about magnets.

>>3940338
He could say Yes or No, dictating either Left or Right. So it would be useless.

>>3940300
...

...did you just suggest making threats at a fucking CPU as a valid answer?
>getthefuckout.jpg

Also
"If I asked you which way it was to the city, what would your answer be if this coin was made of the other possible material?"
if the coin is titanium, he lies about what the nickel coin answer would be, and tells you the incorrect way to the city. If the coin is nickel/copper, he tells you what his lie would have been, and tells you the incorrect way.

>Insert coin
>ask this question
>walk opposite way

everybody's repeating answers now
>>3940335
This guys was the best

>>3940361
...fuck.

>Coin operated robots
>Not solar powered
>2011

ISHYGDDT

>>3940361
Gotta love Jim Henson
david bowie was so great in the movie you fucking stole that answer from

>3940281

if he wasn't lying he wouldn't answer your question and you are out of coins

Rape the robot

>>3940376
It's the only frigging answer to the question, somebody was going to say it eventually, and basically already did right here
>>3940281

>>3940379
hi /b/

Ask the robot where he would tell you to go if he was the liar robot.

Go the opposite way.

Frame the question is such a way that you're asking him what he would say IF you asked him which road to take. That way his potential lying cancels out.

Hmm let me think.

"If I asked you which road leads to the city, what would you say?"

why the fuck would he have a titanium coin on him

>>3940399

Euros are made of titanium. U jelly butt-grumpy amerifat?

>>3940393
hi

>>3940404
>live in america
>use american coins
>never worry about random robots lying to me

>>3940404
Looks like your trips got hungry and ate some dubs.

why does he tell you he's lying? He would just tell you the incorrect way to the city, since he is telling the truth by telling you the lie based on your question.

"Had I inserted a coin from the other category, what would you say if I asked you which way I should take?"

See, if you put in a nickel, then he'd tell you the wrong way. If you put in a titanium, he should tell you the right way, but since titanium makes him lie, he'll still tell you the wrong way. Either way, whatever path he says, take the other one. Come on, this is an old riddle, but with a robot.

"If I asked you the way to the city, what road would you tell me to take?"

Truth) He tells you the answer fair and square

Lie) He lies about his own potential lie, and his bullshit cancels itself out, leaving you with the truth again

so wait, we can only ever travel on 1 road? i mean how fucking far away is this city? i'm pretty sure i'd figure out before too long if i was going the right way or not. fuck the robot, i need that cash for snacks.

>>3940458
Wait, how does it cancel out?

>>3940478

Lie) Oh fuck this guy is asking me what i'd say if he asked me which way to go. Well the true path is left, so IF he asked me which way I'd tell him right. Now I need to lie about what I WOULD tell him, so that means I have to tell him I'd answer left. Haha that'll fix him. I love my job.

>>3940492
This better be how robots think in the future.

>implying i won't just say the first thing i think off and keep the money.

>>3940170

Use the road sign and tell the robot to go fuck himself.

>>3940361
Dammit, this is what I said right back here: >>3940263

>>3940170

we try, we try. gotta be worth somethin

You can take ferromagnetic or non-ferromagnetic coins, telling the truth or lying respectively. I have put one of these into you. If I had put in the other kind, which way would you tell me to go if I asked which road leads to the city?

Alternatively just stand on top of the robot to reach a better vantage point.

>>3940939
And if you don't get it, this means he must tell me to go the wrong way, so I just go the opposite way to whichever he states.