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Archived threads in /sci/ - Science & Math - 92. page


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Why aren't you studying medicine, anon?
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Because I am trying to learn how to make a dinosaur.
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Because my dad died in the hospital in front of me while I was a premed and I realized that this is possibly the shittiest occupation you could have, it's nowhere near worth the money to have someone's life in your hands regularly, and I don't like biology as much as I fooled myself into believing.
>>
I used to want to, but I don't want to work with people or have to explain things to plebs.

>B-but doctor i-isnt there anything we can do?
No, grann'ys brain hemmorrage made her a vegetable now and has 2 days to live dumbfuck.

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What formula do I have to use to derive meaning from life?
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>>8127141
meaning is a social construct
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Find the zeros for Riemann's Zeta Function.
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Just noticed this looks like a cat

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What would drowning while passed out be like?
12 posts and 1 images submitted.
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probably would stay unconscious, in 10 minutes of no oxygen, brain starts to get damaged, 30 minutes and you're probably 99.999999999999999999999% brain dead and 99% of your bodily functions have stopped minus heart beat and brain to try and ensure your brain gets as much oxygen left that remains in your blood
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>>8126789
Dying in your sleep
>>
Sometimes when I get sleep apnea, I dream that my mouth and nose are full of human shit and no matter how much I spit out, there's always more.

How do I git gud at pic related? I'm struggling at Chapter 7 atm.
12 posts and 4 images submitted.
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>>8126731
If you haven't picked up an intro to proof book you should do that first.

Next you read Spivak, every chapter; you fully understand everything in the chapter. Then you do the problems. Repeat til you finish the last chapter.

Good luck
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>>8126770
already did a proofs book but this shit is still hard af
>>
It's ok, OP. I'm currently struggling with chapter 5.

>>8126770

Are you saying I should read ALL the chapters before trying to start the problems? Or do you mean I should just fully understand a chapter before starting that chapter's problem?

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http://nanocar-race.cnrs.fr/indexEnglish.php

This is the future /sci/, screw Formula 1, screw NASCAR, screw all other races, the only race you need watch is the Nanocar Race!
15 posts and 3 images submitted.
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>thousands of people seated in a stadium
>in the center lies a small table with a SEM situated above it
>the contestants each take 140 minutes of chemical wizardry to assemble their nano-cars
>several minutes pass as they are setting up the microscope
>finally, the contestant releases their car, the crowd begins cheering
>30 seconds later, the crowd quiets to listen to the announcer
>0.104 MILLIMETERS
>the crowd erupts, cheering so loudly that the highly unstable molecule car's chemical bonds break
>this repeats for several hours
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>>8126709
you mean unlike every football game in america?
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>>8126709
>>0.104 MILLIMETERS
isnt that fucking impossibly fast tho ?

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Why is combinatorics so hard?
16 posts and 2 images submitted.
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you don't have a mental representation needed for it

yet
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>>8126578
I find it easier and more intuitive than normie math because it's more directly computational.
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>>8126661
How much combinatorics have you done?

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Can something happen after a never-ending amount of things happening one after the other?
17 posts and 3 images submitted.
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Simple question, what are you guys scared of?
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Looks like I finally found a question that stumped /sci/.
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>>8126567
yes, if the series for the time converges, because then it only takes an finite amount of time

Is there an upper limit to human intelligence?
14 posts and 1 images submitted.
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>>8126506
of course, anyone who says otherwise is retarded
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>>8126506
the amount of entropy that can be stored in a black hole the size of your head
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>>8126516
If we're able to store information dense enough to be comparable with a black hole, we're certainly able to replace our squishy bodies with purely mechanical ones and expand the brain to cover a larger part of our bodies, or we can just get bigger bodies with bigger heads.

Hey, I recently did some tests for a government agency, among those tests were an intelligence test and in that test I got the question:

>"If you have a constant flow of water from a tap and you were to place an electrically charged bit of steel right next to waterflow, what would happen?"

I had some alternatives which I don't really remember, but some of them were:
>The water will arch out toward the steel
>The water will turn a different colour in the vicinity of the steel

I have no slightest idea what would happen, but out of cheer curiosity, what whould happen?
21 posts and 2 images submitted.
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would*
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>>8126461
I don't know because I only know pure math and not physics/chemistry
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>>8126464
Well, shit.

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https://www.youtube.com/watch?v=utWEwiAk25M
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>>8126250
https://www.youtube.com/watch?v=_tcW-j7KFgY
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>>8126252
https://en.wikipedia.org/wiki/Lateralus_(song)
>>
https://www.youtube.com/watch?v=F7bKe_Zgk4o

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glitches in the matrix
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Just cringe bro
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So lets design a scientific way to try and observe this.

How would you do this? Have a bunch of people memorize a bunch of random things and check on them all periodically and then record the number of reported 'changes' every so often and compare the percentage of reported changes over time to see if there are any explainable spikes in the number of reported changes? Because of course its entierly plausible and inevitable that people will just remember things wrong, but if a bunch of people suddenly inexplicably remember a bunch of different things wrong at the same time, then its evidence of something?
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before

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What's the point/advantage of having multiple majors simultaneously over doing them one at a time?
26 posts and 5 images submitted.
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>>8125858
it takes less time to do them.
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>>8125859
What about your weekly schedule?
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>>8125859
Not really though. You'll complete necessary credits at the same rate, the only reason it would ever be quicker is if having the extra requirements drove you to take denser semesters.

What's the best psychological method to deal with fear of abandonment? I mean, I suppose it's something you develop when your mother transmits you lots of insecurity during your first years of life, and that will transform into general anxiety disorder, low self-esteem, depression and other illnesses.
The thing is, once you know what's at the core of the problem, how do you recover? Is there any specific method?
25 posts and 1 images submitted.
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>>8125840

I'd wager that the only way is to slowly force yourself into the situations where your fear of abandonment appears and then live through them rather than pulling back

only by continuously exposing yourself to these situations and finding that you do not get abandoned you'll change your innate emotional response and way of thinking

at least, that's one of the basic principles of cognitive behavioural therapy, that you have false, exaggerated or unreal cognitions, which we challenge/ease into

as for
> I mean, I suppose it's something you develop when your mother transmits you lots of insecurity during your first years of life, and that will transform into general anxiety disorder, low self-esteem, depression and other illnesses.

one shouldn't exaggerate the importance of early attachment/childhood experiences too much - while attachment theory is pretty valid and all, the psychodynamic freudian stuff isn't too spot on

obviously the importance of early experience differs between theory, but cognitive behavioural therapy for example doesn't put that much value in the supposed experience that birthed a problem
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>>8125840
>psyc
>>>/x/
>>
Therapy

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So does the smbc dude browse /sci/ or is it just coïncidence ?
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idk but apparently the retards who read him do.
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Omega Hall Trolley Problem


Before the Problem begins, Omega uses godlike predictive power to find out whether you are a Switcher or a Stayer.
Omega presents you with three doors.
Two of the doors, if picked, will cause a trolley is to run over five people.
Behind the third door, there is another trolley.
-If Omega predicted you are a Switcher, it will run over ten people.
-If Omega predicted you are a Stayer, it will run over one person.

Having picked a door, Omega now reveals that one of the doors you didn't pick would have been a Five-Person door.

Should you switch or stay?
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>>8125996
>not adding the ship of Thesus, Russell's teapot and Zeno's paradox

Before the Problem begins, Omega uses godlike predictive power to find out whether you are a Switcher or a Stayer. But you cannot falsify until after the test.

Omega presents you with three doors.
Two of the doors, if picked, will cause a trolley is to run over five people.
Behind the third door, there is another trolley.
-If Omega predicted you are a Switcher, it will run over ten people.
-If Omega predicted you are a Stayer, it will run over one person.

Having picked a door, Omega now reveals that one of the doors you didn't pick would have been a Five-Person door.

However, Omega places everyone on a trolley that is moving much slower than the trolley. By the time your trolley reaches where the trolley carrying the people once was, the people's trolley would have moved ahead a little. And by the time your trolley covers this distance, the other trolley has moved ahead some more.

But as the trolley moves a wheel rusts, so Omega replaces a wheel with an identical one. Then he replaces an ungreased axle with another identical. It does this until the entire trolley is replaced.


Should you switch or stay?

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Hey /sci/. I was wondering if there was an absolute most efficient way to multiply large numbers together, by hand.

Without resulting to a calculator, how can I take

a * b

and figure out which c fits to

a * b = c.

What would be the absolute best method or approach to calculate what c is equal to, if you had to do it all by hand.
13 posts and 1 images submitted.
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>>8125757
logs and log tables?
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>>8125757
> was wondering if there was an absolute most efficient way to multiply large numbers together
New algorithms (essentially variants of Furer's algorithm) continue to reduce the asymptotic complexity, but Schönhage–Strassen is the fastest algorithm that's actually used in practice (more advanced algorithms are only faster for numbers with billions of digits).

> by hand.
This is a meaningless qualification. For a non-trivial number of digits, the fastest "by hand" algorithm is the same as the fastest computer algorithm, as asymptotic time complexity always beats micro-optimisations eventually.
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>>8125761
OP said "large" numbers, which rules out the use of tables (the size of a table is inherently exponential in the number of digits).

Using tables at the base level only gets you a constant factor, it doesn't change the algorithm or the asymptotic complexity.

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