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Archived threads in /sci/ - Science & Math - 2172. page

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I'm starting a physics major having already taken Calc 1 in dual enrollment (high school) and chem 1 in DE as well. Any tips? Strategies to retain the information I'll be learning?
15 posts and 1 images submitted.
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It's not hard. You just need to treat it as a real job and put in 40 hour weeks by your second year. It's impossible to do badly unless you're really lazy as fuck.
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>>7644456
I'm also doing pre-med classes, and ROTC for the USAF. Do you think that's all manageable?
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>>7644459
>pre-med classes

Gen Bio, Orgo, and an extra English class freshman year; big whoop.

>ROTC for the USAF

Enjoy waking up at 5:30am every day and being yelled at for not polishing your shoes enough. Also, it's difficult as fuck to go directly into med school afterwards.

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New neurophysiological evidence suggests humans feel empathy for robots.

Participants were shown a picture of a humanoid robot hand and a human hand in a painful situation, e.g. a cut from a knife. An electroencephalograph showed the brain potentials of the participants. The changes in potentials were similar for the human and robotic hand. A slight difference in the potentials was seen during the beginning of the empathic process, with a weaker reading for the robot hand during the ascending P3 phase (350-500ms after stimulus presentation). The difference disappeared during the descending P3 phase (500-650ms). The difference could be due to humans not being able to think from the perspective of the robot as easily as from their fellow human.

Toyohashi University of Technology
Kyoto University

http://www.eurekalert.org/pub_releases/2015-11/tuot-hce102915.php

Is it silly to feel empathy for electronic circuits?
34 posts and 7 images submitted.
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Because retards can't make that distinction and associate it with actual people who were in those situations, while disregarding the fact that those robots are contextually the same with your calculator.
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>>7644383
The electronic circuits are made to resemble people. Why the fuck wouldn't you feel empathy for a sentient humanoid? HOW CAN YOU BE THIS RETARDED?
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>>7644455
>feeling empathy for 0's and 1's.

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So it was a close battle, but a clear winner emerged.

OFFICIAL AND FINAL.
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>>7644356
>Close battle
>Clear winner
>48 total votes
OP is a faggot
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>>7644358
Two votes is clearly an insurmountable margin at this point.

As we are all well aware of there are only 49 posters on /sci/ in total and fucking Anon49 is too edgy to cast a vote as usual.
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>yurop

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What are some graduate-level fields other than math which use rigorous proofs? I know of statistics, economics, and physics. Is there anything else?
12 posts and 1 images submitted.
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>>7644347

philosophy
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>>7644416
Anon... Philosophy is literally religion but with even more spooks.
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>>7644416
I know there is a lot of convergence in research at the most abstract levels of philosophy/math/CS/econ, but I assumed the average philosophy graduate student is just doing heavily qualitative research or basically just reviewing old literature.

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Is there a scientifically perfect way to play Age of Empires 2?
Checkers is a solved game.
Connect 4 is a solved game.
Chess is soon to be solved.

How long until a videogame like Age of Empires 2 is solved? Is it possible to play a "perfect" game of it?
38 posts and 2 images submitted.
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>>7644113
If you have a defined ideal, with no regard for internal ambivalence, then it is always possible to do something perfectly.
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>>7644113
I saw this on sale on steam, did expect so many posts about it
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>>7644113
Answer from an actual game programmer. Look at it this way AoE2 runs at 30 frames per second. So it's actually a turn based game with a finite grid. So you could solve it for each turn/frame in the same way you would solve chess. You could give all the variables and relation between all variables a cost. Then recursively you could iterate between all possible outcomes of the turn. Then choose the best outcome. For that frame and calculate this for all upcoming frames. It would be computationally very heavy but not impossible.

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Can you id this insect?

Pic unrelated

So basically I see only small dots of red in the room flying as if it were an insect, but it's not alight all the time, also they illuminate a bit when close. but it is a brief flash, not continuous.

They are poisonous, I slept a lot when bitten and have been dizzy for quite a while, though I am better now.

Not sure what else can I say, some bits of my face were kinda paralyzed, hard to move more precisely, a part of my upper lip for instance.
18 posts and 1 images submitted.
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>>7644063
are you sure that you don't drink a lot of diet sprite? because those are the side effects of drinking too much diet sprite
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>>7644160
Not OP but that's extremely worrying is it the artificial sweeteners?
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It's diabetes senpai.
The small dots are hallucinations.

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Can someone explain in an intuitive way how newtons laws tell you that a particles trajectory is determined for all future time? I.e. that if you specify a position at t=0, you know where that particles going forever?
13 posts and 1 images submitted.
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[math]\frac{1}{m} \sum \limits_i \int F_i\ dt^2 = x(t)[/math]
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Second law: F = ma.

The first law is a special case where F = 0, meaning that a = 0. The third law doesn't matter if you are thinking about a single particle.

The second law says that if you know the force on a particle at all times, then you know the acceleration at all times. If you know the acceleration, then you know how much the velocity is changing. If you know the velocity, then you know how much the position is changing.

It's just a cascade of information.

That's it, really. So you need to know the original position and velocity, and the force at all times.
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Dude, the world doesn't work In such a deterministic way. That's why quantum mechanics was created.

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So does mean we have to reformulate the standard model?


http://www.dailymail.co.uk/sciencetech/article-3177449/Nasa-s-impossible-fuel-free-thrusters-work-German-scientists-confirm-viability-super-fast-space-travel-slash-journey-moon-4-HOURS.html
27 posts and 3 images submitted.
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>>7643986
>Daily mail
Also, there is already a thread
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>>7643986
>daily mail

Stopped reading there.
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> space travel that could slash a journey to the moon down to 4 HOURS
sounds too good to be true. But if it's real, I truly believe that we were born in the perfect time to witness the golden age of technological revolution of humanity.

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What is fire?
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what is google ?
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>>7643872
It's the souls of starving children being vented from the gates of hell.
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hot gas

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Please rate, comment, and subscribe. Don't forget to leave a like.

Also, suggest other seminal textbooks.
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>>7643861
never heard of this one but I'm a combo guy.

Concrete Math is reeeeeeeeeally good. Pretty much the classic discrete math book for mathematicians.

Generatingfunctionology is a cool next book to read. If you're into graph theory get anything by Bollobas.

If you want to study some "offbeat" combinatorics, check out Combinatorial Designs by Stinson. Best introduction to that field that I've seen.
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>>7643854
>a foundation for computer science

Then why does it have mathematics in the title? Is it not a "Learn Python in 20 days" book?

ITT: boner inducing sights
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https://www.youtube.com/watch?v=Qn6OvHofcoo

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What are the neural substrates of racism?
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>>7643640
Most human faculties that allow for higher reasoning afford the presence of racism. It's a very natural thing.
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>>7643640
Many animals have a way of identifying family members, to avoid breeding with them; and a way of identifying things which are too different and thus that they shouldn't try to breed with (like other species). Racism is just the latter such mechanism being triggered.
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>>7643650
Humans love screwing exotic things.

What is /sci/'s opinion on qualitative research?

I used to think that it was incredibly weak and the reason why people (unfairly) thought of social science as being soft and non-scientific. However I'm currently doing an MSc at a university where they have a strong tradition of qualitative research and they've pushed it pretty hard, and I can now see that it has some value and can answer some questions that quantitative research can't. If I do a PhD, I might look to do it using qualitative methods because it seems easier and more interesting. What do you think?
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Qualitative research isn't necessarily bad

Might even be better than sociologists misunderstanding statistics and using it incorrectly
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Social sciences aren't sciences though.

Are you really saying things like history, law, and economics are sciences?
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>>7643701
Graduate level econ at a good school is nice

Many of them have undergrads in math

Your typical undergrad "economist" is dumb as a rock though ("why must I learn calculus? waaah waaah")

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Brain uploading is the Great Filter, you cannot pass it without an uploaded civilization.

You'll die in world war 3 or watch modern society unravel under misguided policy if you stay human.

As an upload you escape the human condition, population densities can be magnitudes higher and everyone can live like a billionaire which ensures social cohesion. Biowarfare immuniy, chemical warfare immunity, food safety a nonissue, the integrity of he biosphere a nonissue. You quitely upload and secede from normal society, storing the hardware in a remote secured location, then you just wait until organic humans wipe themself out while chasing some misguided ideology in a hundred years or so before you emerge to explore the galaxy.
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>>7643600
>you
Replace this word with "clone" "identical child" or "knockoff" and your post becomes coherent.

You are you. And it is it. Any other definition of "I" results in disjointed ideas.
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The first generation of brain uploads would be designed by meat brains, they would try to replicate meat stuff like emotions and individuality, but the computer brains would quickly realize there's no point to these limitations and would redesign themselves to be a single hivemind processing unit.
So basically humanity would be dead anyway.
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>>7643609
Then we are back to the classic Theseus' paradox.
What makes "you" you? The cells in your body are being constantly replaced by newer ones.
Maybe the constant flow of electrical impulses and memories are your identity, but that can be carried over too.

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<neat>
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>>7643567
> implying
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Nearest galaxy ~500 Light years

FIVE HUNDRED YEARS FOR THE SPEED OF LIGHT

>implying it fucking matters
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>>7643637
Light years is for measuring time not distance you moron.
It's 500 light yards.

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