Archived threads in /sci/ - Science & Math - 15. page
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I realised a few days ago that all the stuff we call psychological and mental, are nothing more than physical responses of the brain.
in short, i want to know if this really means that any thought we have is a real, touchable thing within our grey/white matter?
Could we someday posess the technology to read and write to a mind via electrical or chemical impulses?
Is there anything i should or could read about this, that is not tinfoil hat level retarded, and not a white paper (as i am too retarded for that, didn't have much of an education, but am...
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>>8197803
Naw dog thoughts are magical
>>8197803
Universities have things called 'textbooks' that contain information about a variety of topics, such as neurophychology.
>>8197810
considering i stated the level of education, by saying i'd be too retarded for whitepapers, i think you could know that i have no reason to be found in any university, let alone their library.
Can someone explain this?
>original thread for keks.
>>>/tv/71877502
>>8197620
It means you always try to fuck the third hottest chick in the room.
Idiots go after the hottest, people who watched that movie the second hottest, which leaves the third at where the best odds are.
>>8197620
the dude reminds me of myself in all the bad ways. im only a little bit as smart as him but all the way as artistic.
>>8197634
He wasn't autistic. Dude was schizophrenic.
You spergs really rhink you can be professors? You know 90% of the job is writing, corresponding with other scientists, giving large talks, and teaching.
>>8197511
I'd love to do that.
>>8197511
>you can be professors?
Nope. Finance here I come.
>>8197511
but a big part of the job is telling people their work is shit. That's like awesome.
What does /sci/ think of this?
>The researchers found that recipients of female donor red blood cells were associated with an eight percent increased risk of death (from any cause) per unit transfused compared with recipients of male donor red blood cells. For example, for a recipient that received six units of red blood cells, this would translate into an associated risk of death of 36 percent for recipients of all-female donor blood compared to 27 percent for recipients of all-male donor blood one year later.
>The...
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>>8197361
Reminder that blood you donated could be in someone's boner right now.
>>8197361
>Researchers find vampires luv young girl blood and whip up disinformation to save it for themselves
I've always wondered if the blood I gave (I've donated 18 times now) ended up being useful at all, but these numbers sound frighteningly high
There's really more than 1/3 chance that getting blood from a female will kill you?
Can we talk about the second law of thermodynamics? Because I don't quite see why it should hold.
As far as I understand it, it is merely a a convenient assumption concerning the geometry of the state space. However it is well conceible that the actual global state space does not need to have this property. So where's the evidence for this global assumption? Lack of counterevidence is not sufficient.
I'm not an expert, but doesn't the evidence come from observing the evolution of phase space for a fuckton of systems?
>>8197106
Monkey poster kys
>>8197106
It only holds true for isolated systems. What you should be asking is why we consider the universe a closed system.
Oh, also, science can't prove shit, can only disprove, and laws are observations of the universe, distinct from theories yo.
Is the universe flat?
We can't see beyond a specific point. Why is it at ALL points in a circle that we can't see beyond?
Because that's the edge of the universe. The universe is one giant spinning top. The geometry works out just the same, as calculated by psychisicts.
The universe expands because the top is spinning (centrifugal force). The universe matter gets flung out further and further as the top spins.
We can't observe beyond the edge of the top because the universe hasnt spun that far out yet. We don't see the light...
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>>8197084
Here is your (You)
>>8197100
is this like the inverse of self /thread'ing?
Hello, i'm looking for someone who both knows the theory behind calculus/derivatives well and is good at explaining math stuff to people who arent fluent with the set theory stuff (symbol notation or w/e).
Sorry for butchering your terminology, but I was wondering why derivatives and their symbols can be counted as... scalars and exponents?
What i mean is you can move dx around ie when doing u sub dy = xdx or dy/dx = x.
Also i guess with partial derivatives and all of maxwell's equations for things like physical chemistry.
And also when...
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>>8197041
Derivatives are operators, like +,-,×,÷ etc...
There's formal proofs that show why you can move them around like terms, but it would be too tedious, and unnecessary to show that every single time you work a problem, so you just use the shorthand
>>8197041
>can move dx around i
dy and dy are like small numbers that shrink away when push comes to shove (in certain 'calm' situations)
The theory why this actually works is complicated (see 'Hyperreal number')
say y = x*x
when y changes by dy, x changes by dx
so we get
y + dy = (x + dx)(x + dx)
= x*x + 2*x*dx + dx*dx
when dx gets small, dx*dx is a second order smallness and can be discarded
y + dy = x*x + 2*x*dx
remember,...
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>>8197132
>dy/dx = 2x
Heh, that's pretty good.
y = sinx
y + dy = sin(x + dx)
y + dy = (sinx)(cosdx) + (cosx)(sindx)
y + dy = ycosdx + (cosx)(sindx)
hmm...
Well, looks like that's as far as the theory goes. Back to real calculus.
Does anyone here have a good stats background? supposedly, this study http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0141854
finds no correlation between community level violence and police shootings. this would disprove the idea that more police shootings happen with black people because black people commit more violent crimes. however, I don't really know how to evaluate the methods because the math in this study is beyond me.
>>8196716
>no correlation
correlation is a number
>this would disprove
this would "disprove" nothing
>I don't really know
That is correct, you don't.
>>8196862
Respect for maths isn't value.
>>8196866
psychobabble isn't value
If I pull this will I die?
No. Bad quality rope.
it would be extremely painful
>>8196680
it would be extremely painful
I'm looking for a good set of lecture notes or just notes in general for undergrad real analysis. I'm self-studying out of Rudin and I'd like to supplement my learning. The ones I've seen on google are either 1) shit or 2) grad level. Any recs?
>>8196590
just grab tao's book (spells out details) and pugh's book (difficulty of problems unbounded)
>>8196646
This is the correct advice.
Does anyone have links to downloads of these then? Oh idk if this is the case with these but I really wanted something that develops basic topology early on like Rudin does
>liking the IDEA of knowing science and mathematics
How do I move my mindset to wanting/actively seeking to know science and mathematics? Do you guys really know what I mean? I like the IDEA of learning all of it, but when I open a book, I don't last more than 15 minutes, yet I know it's important to know this and I have this pseudo-wanting to know it because of how smart it all is. I feel like it's because I'm not in university and I feel like it's pointless for me to learn it because it won't be "counted"...
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>>8196565
I just want to be one of those guys. Scientists and engineers just seem like the smartest people to me. They have all of these answers, know how to solve all of these problems, and I want to be that. Maybe that's partially the reason?
Doing some type of online/home schooling course helps as you have set targets and deadlines instead of picking up a book and reading when you 'feel' like it.
>>8196565
Watch lectures online.
http://ocw.mit.edu/courses/
Is there a way to detect when an electric motor faces increased resistance to automatically shift in a gearbox?
>>8196447
>Your shit Rick & Morty drawing.
Rick's jaw looks like homers does.
>>8196536
https://www.youtube.com/watch?v=7IVJVTUNl0I
>>8196447
Measure the output of the motor and the input and then extrapolate the resistance.
Will we ever have a perfect performance - enhancing drug? Something like adderall, but that doesn't make you risk screwing your brain over? Or in general without negative side effects?
I'm thinking something that labs would start distributing to their scientists, or that could be sold outside classes to prepare for lectures.
Is this a possible utopia or will there always be drawbacks of some kind?
>>8196159
we have it, its called modafinil, the stuff is magic, pretty much the only reason i got a first in my bachelors
>>8196207
when you come off of it, you are worse than before
>>8196207
read more about it online, its a placebo at best.
>nowadays military drones are evolved, not engineered (http://www.genetic-programming.org/sp2003/Marta.pdf)
>they most likely include neuromorphic chips (or they will very soon)
How do you feel about sending an actual form of artificial life to fight and die in a human war? Will the robots be pissed at us for sending their brothers to die?
>>8195832
>I dont know what genetic programming is
Also
>>>x/
>>8195841
what the fuck are you talking about?
Related: https://www.youtube.com/watch?v=EKt_zQHQ-0k
is there a way to learn science without much money?
Yes.
>>8194897
hhhow?
>>8194898
Alright, I'm just gonna tell you a very simple one. Look up a university. I don't know if all do it, but for most, their degree requirements are publicly available. Of course, some of the stuff on there is useless or ambiguous, but a lot of the core stuff is useful. Here's the UCDavis computer engineering requirements as an example. http://catalog.ucdavis.edu/programs/EEC/EECcourses.html Basically, what you do is look at a class, and look at the topics it covers. Now go to google and youtube, and look...
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