Any website/book/whatever with logic riddles?
Example:
A group of people with assorted eye colors live on an island. They are all perfect logicians -- if a conclusion can be logically deduced, they will do it instantly. No one knows the color of their eyes. Every night at midnight, a ferry stops at the island. Any islanders who have figured out the color of their own eyes then leave the island, and the rest stay. Everyone can see everyone else at all times and keeps a count of the number of people they see with each eye color (excluding themselves), but they cannot otherwise communicate. Everyone on the island knows all the rules in this paragraph.
On this island there are 100 blue-eyed people, 100 brown-eyed people, and the Guru (she happens to have green eyes). So any given blue-eyed person can see 100 people with brown eyes and 99 people with blue eyes (and one with green), but that does not tell him his own eye color; as far as he knows the totals could be 101 brown and 99 blue. Or 100 brown, 99 blue, and he could have red eyes.
The Guru is allowed to speak once (let's say at noon), on one day in all their endless years on the island. Standing before the islanders, she says the following:
"I can see someone who has blue eyes."
Who leaves the island, and on what night?
Like this?
http://www.allstarpuzzles.com/logic/index.html
>>7934980
something like that yes but from this century
>>7934978
You have way too much time to spare.
Hi /sci/
There's something about chance that I just don't get.
Say there's a system with 1/4 chance of printing A instead of B. If it prints four B's in a row, won't it be more likely that there's an A coming next? I mean the chances still are 1/4 in theory but it feels as if the chance of A increases with each printed B.
Is that just perception's fault?
>>7934873
each event is independent.
just because your specific string only has a chance of 81/256 to occur doesn't mean it changes the probability of the system in general. It still has a 1/4 chance to print A and a 3/4 chance to print B at each printing step.
>>7934895
But what about luck?
Luck defined as the curve in probability according to the one who inputs the beguining of a sequence. As no matter is lost or destroyed, the universe exists on a very specific but very very very complex numerical pattern. Assuming that holds true, the pattern must be upheld at all times in the universe, and when a high probability outcome occurs anywhere in the universe, there must be a low prob outcome elsewhere regardless of form.
It is the ULTIMATE game of getting dubs, trips, quads, pents, hexs, etc but IRL.
So in a wager situation, if you watch all the events of the world closely and recognize their numerical and probabilational value, if you time it right you can win very low probability outcomes everytime.
That begs the question, if I can cheat the system then I have 100%, but theres still a probability of me getting caught, is probability an arbitrary concept?
>>7934913
Nope, the events are independent and "luck" does not exist.
Yo what's the best fraction
Frog Fractions.
>>7934855
5/16 is my favorite fraction. It's the exact spacing of Lego studs in inches.
>>7934905
>inches
koreans on suicide watch
>>7933619
Why does he even care that much? The money wasn't even involved anymore. He just needs to ask google for a fucking .exe and he can play alpha go as much as he wants.
>>7933684
>Proud asian man loses to a machine in a game he dominates.
Yeah I can't see how he could be so angry/depressed/annoyed.
>>7933688
It was obvious from the start that Alpha Go was superior. I mean even before it first won. It does shit that no human can do, that is how it managed an amazing comeback that any human would have fucked up.
What the fuck is this shit?
I am not a STEM.
>>7939133
Well I'm no expert, but they look like derivation rules for propositional logic.
[math]\varphi[/math] and [math}\psi[/math] stand for some propositions, I for "introduction", E for "elimination", the horizontal bar for the deduction associated to I or E and the funky symbols for logical connectives.
Just some rules for expressions you can use in proofs.
How come that this works?
it doesn't
>>7938352
For one, my shoe size is two digits
Secondly, you just multiply the shoe size by a number with 100 as a factor, so when you add 2012, the last two digits are 12. When you subtract your birth date from that, you get obviously get your age.
You should change this to 2016 btw cause this would only work 4 years ago.
>12
>60
>110
>2200
>3212
>1228
this predicts that my shoe size is 1 and my age is 28.
my actual shoe size is 12 and im 31.
proved you wrong
Is "Psychology = pseudo-science" just a meme? I used to think it was just about hand-holding and bad science experiments, but that's obviously changed a lot since the 1950's and with the advent of fMRIs, EEGs and the like. And its employment of statistics seem to be pretty strict.
What does /sci/ think? Is society just slow to catch up to scientific advances within the field, or is psychology still a pseudo-science?
>>7938242
>Is "Psychology = pseudo-science" just a meme
No.
The first person to mention psychology and the person who created the word psychology was a Croatian writer Marko Marulić who lived on the 15th/16th century.
>>7938247
This is exactly the sort of thing I'm talking about. This argument would work perfectly for Freud, who developed an entire theory with the id, ego and superego (and all the sexual stuff) with no scientific testing whatsoever - he based it solely on his experience with his patients.
But psychology doesn't do that anymore. The only field within psychology that even comes close is social psychology, and even that isn't as bad as what that picture depicts.
>tfw have to calculate taylor series of second order for a function R^3 to R
>>7938083
Are you banned from Wolfram Alpha?
>>7938101
Can't do that in an exam, can you?
>>7938102
>making someone do that in an exam
unless there's like a crazy shortcut for that particular function whoever wrote that exam deserves to be shot .
When bearings roll inside of a chamber, they also slide against each other, and against the roll surface.
There's a coefficient of "roll friction", but since the motion isn't pure rolling, how do you calculate friction?
Depends. You'd most likely have to use sphere moment of inertia. To calulcate the inertia of the ball bearings. Then go from there.
>>7937877
I want my balls to bear his friction.
>>7937902
it's a chick
After you die and your brain has decayed, wouldn't eventually your brain reform due to quantum fluctuations and tunneling? Does this mean immortality?
No thats all bullshit. Dead is dead you hippie motherfucker.
is it theoretically possible? maybe
would is ever happen? no
Consider your body a wave packet and your thoughts constituent waves. If the packet is destroyed the constituent waves dissipate into nothingness. While there isn't a wavefunction for consciousness, probably, it's highly unlikely these waves will reform into another being.
how do I learn to design audio without becoming a fucking CS faggot?
I'm not very good at gay nerd shit like math.
I'm not a CS nerd, I'm just an art guy trying to make games.
>>7937706
>>7937706
this post doesn't make sense
>art guy
this post makes sense
If I'm rolling something on a bunch of ball bearings, do I need to overcome static friction before the thing starts rolling?
nope
>>7937672
ok thanks
>>7937643
you need static friction to stop the base of the ball to start rolling.
Are there more waves than electromagnetic and mechanical waves? The reason I ask is my girlfriend is crazy about crystals and whatnot and insists that crystals and humans transmit waves. Obviously any educated person knows crystals do in fact transmit small electromagnetic waves So I was wondering, is it possible that there are waves being transmitted on a spectrum we do not yet understand? Before the discovery of electromagnetic waves we did not know gamma rays, radio waves, infrared existed. So is it possible that my girlfriend is not bat shit crazy/stupid and that humans/crystals transmit waves on a spectrum on we cannot yet comprehend or scientifically test for?
Don't worry op. My wife believes in essential oils holding magical powers and other voodoo girl blog mom science. They are just naturally stupid. Don't hold it against them.
>>7937370
Thanks, I guess the question is unanswerable but I was wondering if anybody knew anything more than just "no one knows"
So anyway, I'll be doing a biochemistry major when I start college next year. For my minor, I really want to do Japanese because I enjoy the language and culture, and I'm currently studying it on my own and would like to continue it into college. However, I feel it would have little use as a language compared to Spanish when it comes to medical school but my school doesn't offer spanish and I wouldn't take it even if they did. My alternative is a minor in computer science because that's also something I enjoy but for the medical field don't think coding will come to much use, with math as a 3rd option since I do enjoy it. But do med schools even look at what I minor in at all? For usefulness my parents suggested business admin since it'll give me a leg up if I want to do private practice, but I want to work in a hospital setting and honestly all the business crap bores me. My school also offers a healthcare ethics minor but it is also seems boring compared to jap, comp sci, and math. What do you guys think I should do? Also, one more problem is that my parents would be against me doing japanese but would be fine with me doing comp sci or math, or really anything not japanese, so that would be another barrier to it, since I'm a weeb and they hate anime and will think learning japanese will make me weebier.
>>7937325
Whoa there Charles Dickings I didn't come here to read your graduate thesis.
But anyway medschools don't even look at your major, let alone your minor.
Statistically speaking, you have no advantage with any group of majors or minors or anything. They. Don't. Care.
Whatever major gets you the closest to a 4.0 is the major you should choose. They only care about prereqs and GPA. It's that simple.
If you feel like a Women's Study major is easier, go for it.
Explain to the momma and the poppa that they don't even look at your major, and then spend that time you saved volunteering.
>>7937413
So..basically go for the easiest one? I'm still doing a biochem majior sice it'll help me keep god MCAT score and prereqs guranteed covered, so I guess go with the easiest minor? I want to do japanese but parents will not approve. How do I get parents to approve?
tl;dr: How do I get my parents to allow me to minor in japanese since they won't approve?
Is software engineer a meme degree ?
Yes.
>>7936640
On /sci/ anything that isn't a maths or physics degree is considered a meme degree.
>>7936658
Only by maths or physics majors. Do your part to make /sci/ great again. Post more threads relevant to other fields of science.