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Archived threads in /sci/ - Science & Math - 159. page
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/sci/ why are some humans more intelligent than others? Is it because they grew up with educated and/or rich parents? Is it because of genetics?

My dad the other day was saying that people in the West because it's colder there, and therefore natural selection took place because in the older days where knowledge was not so easily accessible only the smartest people could survive the cold. I live in a tropical country where the temperature never falls below 5 degrees Celsius btw.
>>
>why are some humans more intelligent than others?
They aren't.
>>>/pol/
>>
Because people are devoted to different aspects of their lives. Some people value socializing rather than staying inside their house and shitposting on 4chan all day even on a holiday
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Mostly genetics. Among rich and educated some are still smarter than others, and some poorfags are more intelligent than any of the rich.

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>writes equations on his window in white marker for maximum cinematic effect ruining his window in the process

Is he... dare I say it... our guy?
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>implying that's maximum cinematic effect when you could have Ramanujan writing mock modular forms on the ground in chalk, describing visions of black holes given to him by Indian goddesses
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>>8326097
that's chalk friendo
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>>8326097
That's probably grease pencil.

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>writes equations on his mirror in permanent marker for maximum cinematic effect ruining his mirror in the process

Is he... dare I say it... our guy?
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>dividing determinants
lmao
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>>8326081
You can remove permanent marker easily by writing over it with dry erase marker.
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>>8326098
That's a waste, just dump some NMP on it.

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A friend of mine in the service said when he was stationed in the middle east, his ship would routinely reach temps of 190F. That can't be right?

Everything I've read says you'll pass out of hyperthermia within 10 minutes of 130F and higher.
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Should elaborate this was the Persian Gulf on a U.S. navy ship during summer.

Your skin would literally melt off at 190F or something, right? I don't know what boots they used, but surely even those would stick to the deck?
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>>8325886
The higher-ups probably just brainwashed him into believing that it was that hot on the ship so he could feel super "macho" and that he was going through a grand challenge, instead of just sitting on a ship.
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>>8325897
or he knows its bullshit and needs to feel like a hero for sitting on a ship

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what causes people to be this insufferable?

poor nutrition?
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>>8325885
They're both retards. 125/200 = 62.5% and it's supposed to 0.000015 percent not 0.00015
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>>8325903
>They're both retards. 125/200 = 62.5% and it's supposed to 0.000015 percent not 0.00015

literally have no idea how you got 125
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>>8325909
Hahaha what the fuck did you guys sleep in 3rd grade ?!?

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Can we get a list of the greatest mathematicians in DBZ fashion please?

I'm not a math person so i can only appreciate these people by imagining their abilities as DBZ power levels.

I would like them to be ranked for their impact on math/everything, and not only for raw intellect, but quality of achievement over quantity please.

I was personally wondering who had a higher powerlevel: Euler, Gauss, Leibniz

These are all i know about in some detail, but please also feel free to say any others and why.

If you want you could rate them separately...
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>>8325879
Never watched DBZ mate.
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>>8325894
No worries, its just an expression.

In DBZ everyone is ranked by their powerlevel, which is sort of like temperature; it is just a relation of a property between two objects with arbitrary units.

So does Gauss have a higher powerlevel than Euler, ie is he an overall better mathemetician?

I'd rank Neumann as 100 in intelligence because he is almost universally accredited as the smartest man of at least the last 500 years.

However i'd only put his achievements at 80, because while...
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>>8325933
What would you rank Ramanujan at? IMO 9001/1000 since he was naturally very intelligent and he created formulas which are unable to be even proven today.

>tfw your classmates' intellectual intelligence is far less superior to that of my own

What do /sci/?
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>>8325834
Idk leave community college and go to a real university for a real subject?
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Kill yourself to not have to deal with the agony of interacting with subhuman filth
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Honestly I avoid people who are far smarter than me. I can't deal with the feelings of inferiority. I exclusively hangout with brainlets because of this.

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Ignorance is bliss

Imagine if you all of a sudden could have a choice - do you want to learn all mathematical knowledge that will ever be discovered by humanity?

I would say no without any hesitation. I hold mathematics to be the primary human accomplishment without parallel, a body of knowledge that can be so succinct yet expressive in describing the nature of the universe that it is almost spiritual, a gift from the divine.

If you were to understand it all, everything would be subsumed by it. Absolutely everything, because so far it seems like everything...
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>>8325779
The truth is that everyone is ignorant. You must explore your own ignorance before you can move forward.

You can only ever move forward.
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>>8325779
No. Not because I want to be ignorant but because I couldn't give 2 fucks about math that I will never use outside of memes.
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>>8325827
You just saved my faith in humanity

I'm dead serious thank you, in a way I can't explain.

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how do i permanently cease my sex drive, /sci/?

.
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>>8325719
why in the hell would you want to do that?
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>>8325726
for science
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>>8325719
Become a physician.

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There's this passage in this book describing the effects of a relativistic kill vehicle:
>Virginia was more than three hundred kilometers away when the light burst toward her. Every nerve ending in her body began to record a strange, prickling sensation -- the sheer pressure of photons trying to push her backward. No shadows were cast anywhere in the tower, so bright was the glare. It pierced walls, ceramic beams, notepads, and people

My question is: is this passage scientifically accurate, and if so, how much light would be needed...
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>>8325605
You would be dead before you noticed anything at all
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>>8325614
Not really the question, bro.
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>>8325619
>is this passage scientifically accurate, and if so
>Every nerve ending in her body began to record a strange, prickling sensation

>You would be dead before you noticed anything at all

>and if so

He answered the question. Since it's not scientifically accurate, the rest of the question following "and if so" is ignored.

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Sup guys. Does anyone know a way to compute the series

$\sum_{0}^{\infty} \frac{(-1)^{k}}{(2k+1)^{n+1}}$

for any natural number n? I tried to separate it in even and odd ks, but it doesn't seem to help much. I'm looking for a closed way to write it, using the Zeta function.
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>>8325538
The summation is over k, I forgot to write it.
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>>8325538
It's a Taylor series for a very well known function.
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>>8325538
>In closed form
>Using the Zeta function

Pick one and only one.

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Throughout your school career, how did you view people who were really bad at math? The kind of kid that made the rest of the class facepalm or sigh in frustration whenever they asked a question that was so basic it hurt. Have you ever met any kids like that who were legitimately smart but for some reason were god awful at math?
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yes, all the physicists I've met.
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yes, all of the engineers i've ever met

t. math professor
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yes, all the girls I've met.
t. computer engineering student

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opinions for an undergrad physics student?
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>physics
>>>/x/
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>>8325340
opinions?

i like physics too

like that?
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>>8325342
delete this

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Is this picture of spacetime a lie? How would this "local spacetime" even work for objects that are above or below earth?
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>>8325285
Isnt this a much better visualisation of what spacetime actually is?
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>>8325287
Yeah. The first picture is just an analogy because brainlets can't into curved 3-dimensional space.
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>>8325285
It's, qualitatively only, visualizing the curvature of a particular two-dimensional slice of spacetime. It's easy to visualize the curvature of 2D manifolds, because you can embed them as a curved surface in space by adding an extra dimension.

However, curvature doesn't actually require the existence of extra dimension(s) to be warped in; it's just a propriety of the way points connect to each other. Spacetime curvature, in relativity, is specified only in terms of the distances between points...

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Does /sci/ know what this thing is? I found it at a garage sale and bought it because it looked interesting.
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theremin
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>>8325173
anal thermometer set. you put the tube i ur ass and plug it into the outlet.
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>>8325173
The wire on the right that connects to the glass tube. How exactly does it connect to the tube? Does it go inside the tube, or does it wrap around the tube? Is it a continuation of the wire on the left side that coils around the tube?

Can you show us another photo that shows a close-up of the tube? Preferably a side view. I want to see what the wire on the right connects to.

How was Good Will able to solve those problems so easily
>>
>>
Cuz he was wicked smaht.
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because he's not good will hunting, he's actually math damon

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A good friend of mine and his father both have occipital buns. Does it correlate to the fact that they are low IQ white trash? Serious question
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Honestly black people have that shit the most.

So yeah I guess.
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>>8325064
Fuck off back to /pol/.
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>>8325058
Or maybe it means people teach what they are taught?
Oops, I forgot every individual has a DNA based fate amIrite /pol/?

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Time flows backwards.

Prove me wrong.
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So when you pee your pee goes back into your peepee ?
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Entropy
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>>8325003
Yes. I call it eep.

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swamp gas
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>>8324948
SHUT IT DOWN
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>>8324948
I'd stop asking questions if I were you...

Github repo open for attractor rendering program:
https://github.com/chris-liu/Attractor
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>>8324942
Sup Stefan.
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Tom Clancy's Splinter Cell: Chaos Theory is one of the greatest stealth games ever made. Shame that the new games are so shit, though.
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>sit in on physics for engineers class to see how much of a joke their coursework is
>professor calls gravity a force
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>sit on American number theory class to see how much of a joke their coursework is
>they define ${\rm I\!R}$ with Dedekind's cuts
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>>8324924

When trying to teach a high level physics idea makes sense to abstract away the gritty bits. Or something else similar
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Weight is acceleration due to gravity. Forces cause acceleration. Then isn't gravity is a force?

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My professor asked me to write a 1 page response to the following article:

http://scitation.aip.org/content/aip/magazine/physicstoday/article/69/1/10.1063/PT.3.3037

Basically, discusses the fear mongering surrounding low dose radiation and points out the evidence for fearing the dangers of low dose radiation is lacking. It discusses the validity of the LNT model, which believes in a linear relationship between radiation doses. So if lots of radiation is bad for your, a little bit of radiation is also bad, just not so much,...
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>>8324920
>My professor asked me to write a 1 page response

lol
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>>8325031
kek'd. Its just a writing assignment, I'm a chem undergrad, but I'd like to see what sort of sources /sci/ could pull up. But at the rate of this thread looks like I'll just have to push along.

Also just to clarify, if you give any sources, the only ones I can use are ebooks.

Though really I'd just like discussion on this for perspective.
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I'm not gonna do your homework. Think about the topic yourself and write the one page report.

Honestly what the fuck does this even mean. I come on this board quite often and can understand almost all things on here, but then I see this thread and I'm so fucking confused. So what the fuck does it even mean?
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>>8324898
durr, it's mean N=1 or P=0. Isn't that super easy?
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Okay fuckdingo In general there are three sets of computational problems: Those that can definitely be solved in polynomial time or less (P), those that can definitely not be solved in polynomial time, only in exponential time (EXP) and those that there is currently no polynomial time algorithm to solve but it hasnt been proven that there is NO polynomial time solution (NP). The question of P=NP is whether there exists a polynomial time solution to any of the NP problems. All NP problems are reducible to eachother so a polynomial time solution to one NP would result in a poly...
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>>8324898
P and NP are classifications of algorithms that solve problems. P stands for Polynomial time, while NP stands for Non-deterministic Polynomial time.

An example of a problem in P is the sorting problem: You're given a list of unsorted data and asked to sort it. You can write an algorithm that sorts the data in O(nlogn) time. What that means is that if you have a dataset of size n, you can perform n*log(n) operations on that data and have it sorted at the end. As n grows, the number of calculations you need...

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Is it be possible to recreate a human brain using mechanical and electronic parts, that will function just like a brain?

bonus question: would that brain have consciousness?
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Yes.
Depends on the hardware implementation.
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Yes and yes, provided it was a perfect imitation. In practice we could only ever get a pretty good approximation, and the answer for that is tricky. I think the brain can be mathematically modeled and if that is the case then it can be computed. Hence, I believe a sufficiently powerful computer could simulate a brain which I think would cause consciousness to arise.
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>>8324819
>Is it be possible to recreate a human brain using mechanical and electronic parts, that will function just like a brain?

Yes, you could (in theory) create an analog that behaves exactly like the real thing would.

>bonus question: would that brain have consciousness?
Nobody knows and nobody will ever be able to answer.

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Are there any actual, solid study tips that aren't complete meme advice? I need to do a shit tonne of work but the only tip I've gotten is not to overload myself, so how is it going to get done?
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>>8324754
I too hate the widespread use of the term "app". Even though it's as old as all the other terms on that image, it was never used because it's oversimplified and retarded.

Now oversimplified and retarded is the target.
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>start early
>get into a rhythm
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>>8324754
Don't get bored and distracted, then masturbate.
Don't use 4chan.
Just start and once you're in the mindset it simply becomes that you will only continue.

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Pic related
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The only thing I need to do in this semester is to write my master's thesis.
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>>8324692
What engineering is that? ;^)
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>>8324704
>Spics aren't smart enough to go to colleges. Now fuck off

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>Stewart's Calculus is a good textbook

pic related sure looks like mathematical rigor to me. Why do people even recommend this book? Is it just a meme?
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People on this board are (on average) 17-18-year-old kids who have just started studying in university. They don't need rigor, they need intuition and motivation. Rigor is for post-graduates such as myself.
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>>8324530
its calculus for engineers m8. engineering is literally "seems about right: the job"
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>>8324537
>They don't need rigor
stop posting any time
Rigor is the first thing you should learn. Especially if you're an engineer, because you're sure not going to learn it in materials science classes.

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How much would it cost if I want to sequence my entire DNA?
How much would it cost to create an entire arbitrary human DNA?
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Average biologist has around 115 IQ. For comparison, the average physicist has an IQ of 132. I wouldn't wait up for any "super mega DNA generating magic" in your lifetime.
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>>8324395
There are methods to create an arbitrarily large dna segment, stupid brainlet.
I don't know about folding and packing, but I'm pretty sure it won't be that hard.
>>
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>>8324410
>but I'm pretty sure it won't be that hard.
If it wasn't that hard, then it'd be developed by now.

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Aside from slowdown in small programs that don't need it, why is OOP bad? Why do people imply "X fell for the OOP meme"? [spoiler]What do you think of OOP?
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I could start ranting how CS is not science and how it doesn't belong to this board, but I'll take another approach instead:

Programming is not CS. Unless you are talking about mathematical optimization, i.e integer/linear programming. OOP is purely software engineering shit and belongs to >>>/g/.
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>>8324373
Class inheritance polymorphism etc are usable design patterns that allow to make large programs with a lot of functionality. However I'm against it. I rather have decorator pattern with a few singletons to tie everything together. With OOP you can say Object A is a Object B I rather use Object C has an Object A and an Object B. This makes everything a lot more clear and readable. The old OOP paradigm is dying and we all know it.
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I'm gonna reply to this thread because I disagree with the above poster and his claim that software development paradigms are not relevant to discussions of science and math.

OP, I have no qualms with OOP. It's main issue is that it is very easy to be sloppy, and that it shouldn't be taught until after prodedural programming.

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Is there any reasonable prospect that during the next half-century, humanity will develop medical / technological interventions that will enable us to substantially reverse the damage the body accumulates over time during the ageing process?

Pic unrelated
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>>8324318
>during the next half-century
2016-2066? any reasonable prospect? sure

and by the way as far as i know
>the damage the body accumulates over time during the ageing process
is just a dominating mindset right now - there's still a possibility that ageing is genetically programmed
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>>8324318
No. This will literally never become possible.
Ok, maybe not "never", but definitely not in the next half-century and it will never be the practical solution.
How are you planning to "reverse" damage done on hundreds of billions of unique cells? How are you going to retain the macroscopic morphology?
These kind of shit aren't really doable.
We will all die. There's no way around it.

Maybe you can prolong your death or improve the quality of life until death, but death is a given.
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>>8324336
>there's still a possibility that ageing is genetically programmed

That'd be even better since you could fiddle with that more easily to turn it off. It is easier to fix 1 thing than it is to fix 100.

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