[Boards: 3 / a / aco / adv / an / asp / b / bant / biz / c / can / cgl / ck / cm / co / cock / d / diy / e / fa / fap / fit / fitlit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mlpol / mo / mtv / mu / n / news / o / out / outsoc / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / spa / t / tg / toy / trash / trv / tv / u / v / vg / vint / vip / vp / vr / w / wg / wsg / wsr / x / y ] [Search | Free Show | Home]

Archived threads in /sci/ - Science & Math - 1175. page

This is a blue board which means that it's for everybody (Safe For Work content only). If you see any adult content, please report it.

File: image.jpg (194KB, 960x720px) Image search: [Google]
image.jpg
194KB, 960x720px
Why do people like to dress up as other people? Why has natural selection seen fit to reward us with dopamine for this?
18 posts and 3 images submitted.
>>
Evolution "likes" to try every trick in the book.

Wanting to have sex with an animal, or having someone take a poo on you before sex, or wanting to be degraded before sex, etc. may not have an evolutionary advantage, but then again, who knows?

Coming down out of the trees seemed like a bad idea for a bunch of apes in a continent filled with lions, but look how far we got...
>>
>>8499283
dopamine doesnt code reward bitch, thats a fucking 30 year old meme.
>>
File: 1439901697034.jpg (8KB, 180x180px) Image search: [Google]
1439901697034.jpg
8KB, 180x180px
>>8499292
>Wanting to have sex with an animal, or having someone take a poo on you before sex, or wanting to be degraded before sex, etc. may not have an evolutionary advantage, but then again, who knows?

Natural selection works through removing traits which prevent the offspring from successively reproducing, if the trait doesn't prevent successful reproduction there will be no reason why it won't be passed onto the next generation.

>pic related

File: 1480020638116.jpg (180KB, 517x768px) Image search: [Google]
1480020638116.jpg
180KB, 517x768px
About quarternions.

Everything I see written about the subject of quarternions says that for

Q = A + Bi + Cj + Dk

has the condition that

i^2 = j^2 = k^2 = ijk = -1

How can this be true that ijk = -1?

If i = sqrt (-1) and j = sqrt (-1) and k = sqrt (-1)

Then

Ijk = sqrt (-1)*sqrt (-1)*sqrt (-1)

That does not equal -1.

Is this 19th century trolling?
14 posts and 1 images submitted.
>>
>>8499029

Don't bother learning quaternions, they are useless. Litterally. Absolute garbages. The most useless field in maths.
>>
>If i = sqrt (-1) and j = sqrt (-1) and k = sqrt (-1)

Thats your problem right there. The condition i^2 = j^2 = k^2 = ijk = -1 is strong, thats how that quarternion units are defined, similar to how the i is defined with i^2 = -1, or some equivalent form, with the complex numbers.
>>
>>8499037

Use matrix.

http://mathworld.wolfram.com/Quaternion.html

File: 1476515880270.jpg (53KB, 600x450px) Image search: [Google]
1476515880270.jpg
53KB, 600x450px
Why do so many people just cram and then forget material in early level mathematics like algebra? These are always the ones who end up having trouble in calc courses.
12 posts and 1 images submitted.
>>
>>8498848
Cuz they didnt side with the Vaegirs, m8. Perfect mixture of brains n balls.
>>
here there be brainlets
>>
Maybe some people are truly retarded but hardworking.

File: logo.png (7KB, 458x446px) Image search: [Google]
logo.png
7KB, 458x446px
Hello /sci/.

I'm making software to analyze boards and threads on 4chan.
How do I measure intelligence of a board? I was thinking of something including image ratio, length of posts and sentimental objectivity.
Also, what other metrics should I consider?
19 posts and 2 images submitted.
>>
>>8498102
The only thing considered a measure for intelligence is the intelligence quotient, there are tests for that. If you want to determine the intelligence of a poster by their posts, you need labelled data to train a regressor. You don't have that. Everything else is just guesswork.

Anyway, if you want to look at interesting quantities by themselves you may look at features such as:
>Number of different words per thread
>Length of posts
>Number of misspelled words
>Number of unique posts
>Number of original posters per thread
>Number of "meme words"
>Number of images posted
>Number of unique images (images that haven't been posted so far)

It would be interesting to do the following by the way:
Look at only the OP and train a classifier and judge whether the post will reach its bump limit (or a regressor and determine how many replies the thread will have.
>>
>>8498115
Yeah, I already got half of those you said.
A really cool one would be something along the lines of keywords, words that are not on the list of 10,000 of the most popular English ones, but the most popular on the board. I wonder what the outcome would be for different boards. I also want to include plotting graphs. And I don't want to do anything with machine learning just yet.
>>
>>8498102

You should include a function to quantify the dankness of memes posted.

File: question mark.jpg (55KB, 883x960px) Image search: [Google]
question mark.jpg
55KB, 883x960px
I don't want to die, when will we invent immortality?
21 posts and 4 images submitted.
>>
>>8498069
Drink bleach and you'll never have to worry about dying again.
>>
>>8498073
Don't do it OP, this will kill or seriously injure you (this is worse because then you'll have a life of suffering from knowing that you listened to some idiot on the internet and hurt yourself because of it) and be crippled.

He wants to NOT die, not to NOT worry about dying.

And the solution to that is simple, just eat well and avoid dangers to your life and you'll live for a reasonable amount of time just like everyone else barring incredibly poor luck and/or a freak accident that kills you.
>>
>>8498069
Don't worry about death, it will literally be peaceful bliss.

File: lab-tech-300x199.jpg (20KB, 300x199px) Image search: [Google]
lab-tech-300x199.jpg
20KB, 300x199px
Who here /lab technician/?

Share your feelings and experiences with scientists.

Mine: scientists shouldn't be allowed in the lab
25 posts and 3 images submitted.
>>
>>8498053
What type of education does a technician need?
>>
>>8498133
About the same as the scientist, although bachelors degree is enough.

Lab technicial here, me and most of my collegues are just sort of scientists in training.
>>
>>8498140
>scientists in training.
are you pursuing a masters or phd in the future?

>>8498053
>scientists shouldn't be allowed in the lab
why?

>Figure out the mechanism by which DNA causes cell differentiation for all tissues and organs
>Edit the DNA
>Grow a liver in the lab from stem cells that has a 1200% efficiency boost over your own and get it implanted
>Get a gorrila tier heart for improved physical performance and get it implanted
>Get a cocaine gland
What future tech are you most looking forward to?
23 posts and 2 images submitted.
>>
>>8497834
>What future tech are you most looking forward to?
The 'tech' that cures our brains of the need for stupidity like 'religion' and 'spirituality' and 'racism' and 'sexism' and all the other stupid ass-backwards shit that keeps dragging us back to acting like animals and stalling our overall evolution.
>>
>>8497852
Nice fedora nigger
>>
What you're saying is the biology equivalent of
>make paper airplane
>go to the moon

Doesn't evolution entail that life has higher forms that humans probably can't comprehend?
12 posts and 4 images submitted.
>>
Not really. All it entails is that some life forms are adapted as shit to their environment.
>>
>>8497724
Yea, evolution doesn't guarantee an advancement from simple to complex.
It can go fowards, backwards, or nowhere at all. There is no end goal, only adaptation.
>>
>Evolution works toward a teleological end point!

File: What.png (545KB, 750x600px) Image search: [Google]
What.png
545KB, 750x600px
Panic time?

"Eternal inflation predicts that time will end"

Raphael Bousso
>The universe has a 50/50 chance of ending in the next 3.7 billion years.

That's scary ... Is this true? Or is it a complete lie?

Sources:

https://arxiv.org/abs/1009.4698

http://io9.gizmodo.com/5665742/the-universe-might-have-to-end-in-37-billion-years-so-that-the-laws-of-physics-make-sense/all

http://www.abc.net.au/science/articles/2010/10/08/3028955.htm?site=science/tricks&topic=latest&listaction=unsubscribe
22 posts and 3 images submitted.
>>
>>8497582
>Trying to predict the unpredictable.
He must be 'so' smart. :^)
>>
>50/50 chance

Either it'll happen, or it won't
>>
Those are pretty high odds, compared to the ones we'd been fed before.

Let's hope that's enough time for us to figure out how to control this stupid place.

File: Screenshot_20161126-000433.png (308KB, 1440x2560px) Image search: [Google]
Screenshot_20161126-000433.png
308KB, 1440x2560px
Hey /sci/. Your en/g/ineer brother here

I was snooping around /x/ and stumbled upon this.

Seems to me to be a bunch of nonsense

What's up with this though? Pretty weird
12 posts and 2 images submitted.
>>
>>>/x/18366984

Hope I linked it right
>>
>>8497576
What is it, OP?
>>
>>8497591
http://acdca.appliedchaosdynamicscontrolassociation.net/
We're not exactly sure. Some anon on /pol/ had googled the digits from his get and this came up

File: africa.png (11KB, 514x559px) Image search: [Google]
africa.png
11KB, 514x559px
consider the following

is it possible that some tens of thousands of years ago, some of our ancestors who left africa for the middle east and later europe were on average more intelligent than those that stayed behind because realising that it was a good idea to leave africa could not be done without a certain level of intelligence? and as a result of that, is it possible that "native" africans are more likely to be be of lower intelligence?
15 posts and 1 images submitted.
>>
>>8497478
>>8497478
Please don't bring ancestral dna circle jerking to this board; we had threads that got deleted and people banned left and right from /pol/ and /int/. Let's not shit this board up with these kinds of matters.

To answer your question, there's been studies from the other side that Europeans didn't come from Africa but rather everyone started in a different continent; rather than the WE WUZ AFRIKANZ meme perpetuated by the lefty scientists.

Your thesis is possible. It's also possible that certain parts of Africa evolved and everyone else just were degenerates or became degenerates due to degradation of culture and life.

It's also possible you, the OP, may be an artificial construct and that I'm just a dog slobbering all over his computer smashing his head to make this coherent and educated post. Who the fuck knows, anything is possible at this point.

I think the real question is not to ask whether Africa has idiots or not but rather how can we help terraform the continent. The biggest issue there is the lack of irrigatable crops and almost no biodiversity in the desert areas in middle of the continent
>>
>>8497484
This desu.
>>
>>8497478
>realising that it was a good idea to leave africa
no way for them to know that

File: Major Guide.png (28KB, 429x608px) Image search: [Google]
Major Guide.png
28KB, 429x608px
Anyone got an info graphic on classes in a physics major?
18 posts and 1 images submitted.
>>
Just go to the physics page of any university and read their curriculum.
>>
>>8497372
It's too hard to navigate their shitty websites.
>>
just read Gerard t Hoofts page on how to become a good theoretical physicist
Google it

Why is math so hard?


Should a person with a two digit IQ even bother trying to learn math?
31 posts and 3 images submitted.
>>
it's hard for some, not hard for others. high IQ isn't a necessary nor sufficient condition to be good at math
>>
>>8497267
kek
>>
>>8497267
>high IQ isn't a necessary nor sufficient condition to be good at math

how many successful mathematicians have 2 digit IQs?

File: concentration.jpg (97KB, 1280x720px) Image search: [Google]
concentration.jpg
97KB, 1280x720px
/sci/, are there any scientific methods that would help me increase my focus? I have trouble concentrating for more than 10 minutes. My mind just wonders and I do something else after working on something. Is there a way for me to improve?
25 posts and 3 images submitted.
>>
>>8497114
try meditation.
>>
>>8497131
isn't meditation nonsense and pseudoscience?
>>
>>8497421
Depends on how you approach it. For most of it it's a pretty simple, but difficult exercise. But obviously new age retards take it as some voodoo shit.

File: Obi-Wan-Kenobi_6d775533.jpg (193KB, 1536x768px) Image search: [Google]
Obi-Wan-Kenobi_6d775533.jpg
193KB, 1536x768px
Is there anything more autistic than computer science/programming job listings? Just came across one that went something like this:

>must have seen Star Wars trilogy x number of times and dislike the prequels

I've seen other ones that basically imply you must be an epic memer and meme around the office all day with your coworkers and know epic pop culture references. I get that they're trying to be funny or show a casual atmosphere, but it doesn't belong in a job listing and it completely puts me off of even applying.

What do you guys see in job listings that makes you instantly drop them? Specify your field if necessary.
23 posts and 6 images submitted.
>>
File: YWQVt8U.jpg (36KB, 449x600px) Image search: [Google]
YWQVt8U.jpg
36KB, 449x600px
>>8497113
>must have a good sense of humour
>tfw my humour is all black and that's basically the extent of it

Would get me fired if they even heard a whiff of it, definitely off-putting - can't tolerate normie """humour""" Although most find mild black comedy funny, but the good stuff is something not many would find amusing.
>>
>>8497113

If you don't like reddit, you are under no obligation to visit reddit.
>>
>>8497246
Examples?

Pages: [First page] [Previous page] [1165] [1166] [1167] [1168] [1169] [1170] [1171] [1172] [1173] [1174] [1175] [1176] [1177] [1178] [1179] [1180] [1181] [1182] [1183] [1184] [1185] [Next page] [Last page]

[Boards: 3 / a / aco / adv / an / asp / b / bant / biz / c / can / cgl / ck / cm / co / cock / d / diy / e / fa / fap / fit / fitlit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mlpol / mo / mtv / mu / n / news / o / out / outsoc / p / po / pol / qa / qst / r / r9k / s / s4s / sci / soc / sp / spa / t / tg / toy / trash / trv / tv / u / v / vg / vint / vip / vp / vr / w / wg / wsg / wsr / x / y] [Search | Top | Home]

I'm aware that Imgur.com will stop allowing adult images since 15th of May. I'm taking actions to backup as much data as possible.
Read more on this topic here - https://archived.moe/talk/thread/1694/


If you need a post removed click on it's [Report] button and follow the instruction.
DMCA Content Takedown via dmca.com
All images are hosted on imgur.com.
If you like this website please support us by donating with Bitcoins at 16mKtbZiwW52BLkibtCr8jUg2KVUMTxVQ5
All trademarks and copyrights on this page are owned by their respective parties.
Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.
This is a 4chan archive - all of the content originated from that site.
This means that RandomArchive shows their content, archived.
If you need information for a Poster - contact them.