Archived threads in /sci/ - Science & Math - 590. page
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Explain to me, in layman's terms if possible, why falsifiability is important and mandatory.
Because if something isn't falsifiable it can't be tested scientifically. If under no circumstances can your hypothesis be proven wrong, then it makes no concrete predictions, and therefore isn't science.
Some examples of such pseudoscience is psychoanalysis. It tries to explain some behaviors as suppressed subconscious urges which are denied by the person. As there's no way to possibly design an experiment where the psychoanalytic approach would be proven wrong (as every result would be interpreted as either the manifestation of the urge or its denial),...
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>>7690901
>why falsifiability is important and mandatory
It isn't. Stop reading popsci faggot
>>7691050
Idiot social science retard detected
What are some examples of notable scientists/mathematicians/other intellectuals who had a severe mental illness?
>>7690889
They say both Godel and Cantor were crazy, though not officially diagnosed with anything both of them spent time in mental hospitals and you know Godel starved himself to death so that's gotta be some kind of insanity.
>>7690889
John Nash
>>7690897
This
Which door would you pick /sci/?
>>7690816
A. My justification even though you didn't ask for it? It's blue, the favorite color. No context was given, either. I wasn't told of a prize or an item to receive.
Best case scenario I gain riches, worst case scenario I get a free door or nothing at all. Or I guess there could be somebody with a gun behind there instructed to fire at me.
Anyways. WHATS BEHIND THE BLUE DOOR FAGGOT
>>7690821
You opened the gates of hell. Game over.
>>7690816
I'd punch the fucker in the face and open all three.
>/biz/ checking in
Can someone provide a very intuitive explanation of the P vs NP problem?
>>7690809
P = NP postulates that there are no non linear functions that require an exponential amount of iterations given the input that can't be reduced to non linear functions that only require a polynomial number of iterations for the same task.
It's a meme.
Let n = 1
P(1) = P
NP=P
P=NP
>implying modern science isn't stuck too far up it's own ass for intuition
Why do people like cigarettes? I've never smoked, but they smell like ass and have nothing but bad side effects. Is there any sort of buzz?
>>7690807
They actually make you smarter, not even joking.
>>7690807
they are very calming.
>>7690817
scientize that claim por favor
The only positive I've ever heard is weight loss and shorter life span
How accurate is this?
>math is babby's first probability
>>7690806
She looks like a giraffe when she takes a bit out of that burger. I think I'm in love.
>>7690790
>engineer looks like he's about to suck some cocks
>mathematician has that smile when you're complete out of touch with reality(looks like he just smoked some weed)
>philosopher looks alpha as fuck
Pretty accurate.
In the book "The Martian" there is a scene which amounts to the main character being trapped inside a box which he want to move relative to outside (a level surface). He achieves this by jumping in the air and kicking the box. He then refines this by just jumping and slamming his back into the wall. Would this work? It seems like trollscience and I'm not sure about the momentum situation?
>>7690666
When was this? For some reason, I don't remember this scene, are you trying to bait /sci/ again?
>>7690672
>In the book
WITNESSED
Not sure if this belongs on /his/ but...
how much mathematics by European and American mathematicians were discovered by Asian mathematicians a few years earlier? I know Bernoulli and Cramer were outpaced by Takazaku (you could even argue that he discovered the Newton-Raphson method before Newton and Raphson did), but was there anyone else?
>>7690660
Doesn't matter. They didn't have Christian values and squandered their discoveries by keeping it to themselves.
>>7690700
They're still the earliest discoverers
>>7690700
>Christian values
lel, b8, but it it's true if you replace "Christian" with "Enlightenment"
THIS IS NOT a homework question, just something I would like for you guys to help me solve for fun and pic not related, I needed a pic.
Hey /sci/, I have a question that should be easy enough for you guys to solve. I know Its against the rules but I really need this question solved.
The question:
Holly Woods is a popular actress and Joe Fish is an up and coming young comedian. Joe has an income which is five-eights of holly's income. Joe's expenses are one-half of those of Holly's income, and Joe's saves 40% of his income
Determine...
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Nice homework blog
>>7690639
Anon, it really isn't my homework. This problem came out of my 9th grade sisters notebook and I'm
frustrated that I cant even solve it, pls help.
>>7690635
that pic though,
way to complicate the simplest multiplication ever.
how do you guys make math interesting or actually like, I'm currently struggling with it because unlike other subjects I only learn because I have to, in other subjects sometimes I even learn topics ahead of time or some that I don't have to learn just out of interest or curiosity. help me /sci/
>>7690585
do you even get it, pleb ?
>>7690585
>how do you guys make math interesting
I don't know, sometimes i just view as a game.
>>7690585
Mild autism.
No really. The pleasure of math is somewhere between a really complicated puzzle where all the pieces click into place once you solved it, or like an OCD person who will only feel comfort once he clicks the right and left sides of his mouth with his tongue just the right number of times.
A commercial flight travels 545-575 miles per hour and the average altitude according to regulation must be around 40,000 feet or around 8 miles. The earths curvature of 500 miles is 31.70 miles.
What is the rate of maintaining a level of the average altitude of aircraft?
OR what is the rate of decent in minutes to maintain the altitude 40,000 feet if the aircraft is traveling at 575 mph and the curvature over a distance of 500 miles is 31.70 miles?
>>7690475
*descent
>>7690478
its not homework.
hey /sci/ i had a little project where i have to teach people basic cryptanalysis, figured i'd share here:
--
Howdy! In this thread, we'll be learning to crack some very basic 17th-century level ciphers. The point is not that these ciphers will help you in your day-to-day, but that they'll give you a more technical understanding of what's happening beneath the hood when you're cracking wifi passwords or using PGP.
Obviously you’re all familiar with rotation ciphers, also called ‘caesar ciphers’ after the inventor. You simply turn...
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we decoded it on the very first try! let’s try a harder one.
encrypted message:
tgtlgsdauwewkksywjwuawnwvoaddfglsuloalzgmlafxgjeslagfozqgjsfywbmauw
frequency count:
8 - w
7 - ag
6 - l
5 - s
4 - fu
etc
Our first guess should be to substitute ‘w’ with ‘e’ (rot8), since it’s the highest count.
bobtoalicemessagerecievedwillnotactwithoutinformationwhyorangejuice
with spaces:
bob to alice message recieved will not act without information why orange juice
So, how would you go about making it more difficult to...
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You convert it to numbers:
"2 15 2 20 15 1 12 9 3 5 1 3 11 14 15 23 12 5 4 7 5 4 23 9 12 12 9 14 22 5 19 20"
Now, you go through the codeword, which is called the “key”, and repeatedly add the values of the codeword to the value of the letter, like so:
"b+b o+o b+n t+e o+r a+b l+o i+n c+e e+r a+b c+o k+n n+e o+r w+b l+o e+n d+e g+r e+b d+o w+n i+e l+r l+b i+o n+n v+e e+r s+b t+o"
"2+2 15+15 2+14 20+5 15+18 1+2 12+15 9+14 3+5 5+18 1+2 3+15 11+14 14+5 15+18 23+2 12+15 5+14 4+5 7+18 5+2 4+15 23+14 9+5 12+18 12+2 9+15 14+14 22+5...
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This is quite unusual; the variances in frequency are flattened out. This would tell us, after testing ‘y = e’, that we probably aren’t dealing with a rotation cipher.
The reason this cipher is called ‘polyalphabetic’ is because it uses n alphabets, where n is the number of characters in the ‘codeword’ or ‘key’. In the case of the previous post, there were five alphabets: one used for characters encoded with ‘b’, one for ‘o’, one for ‘n’, one for ‘e’, and one for ‘r’.
How do we use this to attack the cipher? Well, if we suspect...
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sup /sci/ I need to get like a 9.9/10 in an upcoming math exam that includes all high school topics and some college ones. Basically I need to get really good at geometry, algebra, trigonometry,precalculus differential calculus, integral calculus, statistics and probabilty
I have a bit more than a month where I'll be doing nothing but that, literally no job or school. What's the most effective and fastest way to learn?
also how do I find love for math so I can put up with so much study? I'm trying to fix myself please help /sci/
>>7690266
Depending on what kind of questions you'll be tested on, it shouldn't be too hard. My advice is to just make practice exams with possible questions, and just sit on your desk, time yourself, and do these exams without any notes. After a week you'll notice a great difference in improvement and should be okay.
>>7690266
1. know exactly what the questions on the test will look like.
2. read about where these problems come from and the different ways they can be applied and solved
3. after doing a literal fuck ton of problems, do another practice test without looking.
4. if you miss anything, repeat steps 2-4.
Determine if the alternating series converges or diverges.
>>7690216
Can't do it, not even if sober.
The series diverges
>>7690219
ur kidding right? it clearly converges
Can anyone provide any info on the suicide by cherry method? Apparently if you grind 200 cherry pits and drink it the cyanide in them will kill you. Is there any truth in this? Common sense tells me that if it really was that simple, a lot more people would be doing it, yet I've never heard of anyone killing themselves like this.
>>7690096
try it, also please livestream.
http://www.artofdrink.com/archive/research/cyanide-in-apricot-cherries-pits/
>>7690096
Yeah
I doubt a lot more people would be trying to kill themselves by cyanide...
>>7690096
>climbing a thousand foot ladder instead of taking the elevator
