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Archived threads in /sci/ - Science & Math - 281. page
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What is the difference between a Psychopathy and Sociopathy?
Often I've seen the terms used interchangeably, but on the other and I see some people stressing on the fact that are not the same thing.
>>
>>7652810

one is a meaningless term used by the APA to bank on victims of a corrupt justice system

the other is a meaningless term used by the APA to bank on victims of a corrupt justice system

psychology would be almost as useful as astrology, except that gravitational waves produced by stellar objects is real and any purported objective description of what goes on inside your head that doesn't take into account external factors is not
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>>7652810
Psychopaths are supposed to be more organized and harder to spot. Also they tend to be born with it as opposed to being a victim of child abuse or something.
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>>7652836
>psychology would be almost as useful as astrology, except that gravitational waves produced by stellar objects is real and any purported objective description of what goes on inside your head that doesn't take into account external factors is not
i kek'd, thanks anon.

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>"The authors showed in previous work that..."
>no citation where they showed it
>people who use $2^A$ instead of $\mathcal{P}(A)$
>people who only use single letters to name functions and sets
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>>7652770
>>people who only use single letters to name functions and sets
Programmers gtfo.
>>

Log will always be base 10 to me :3
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>>7652882
This so much

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STEM doesn't exist anymore, it wasn't progressive enough.
It's STEAM now, shitlords. Like the site you use to buy videogames on pc.
Women felt excluded so we had to add the A, which stands for "Art".
Look at the cool shit modern artists can do, they are of prime importance to our society

http://stemtosteam.org/
http://steam-notstem.com/
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>>7652691
>Art
>Discover
>Understand
>Design

Kek.
>>
Why women?

At least STEAM rhymes with meme.
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>>7652707
>At least STEAM rhymes with meme.
what

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Physics people. Let's assume that we live in a closed universe (in which you travel far enough in any direction and end up back where you started). Picture two observers Alice and Bob, both in inertial reference frames and traveling past each other, each measuring the other's velocity to be close to c (and theirs to be 0, obviously) as depicted. On one particular 'pass', when they're both next to each other, they synchronise their clocks and continue on their way. The next time they meet each other, both will claim that more time has elapsed on their...
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>>7652676
>synchronise their clocks

whooops
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>>7652676

How do they synchronize their clocks?

What is the physical method of determining synchronisity?
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>>7652676
those names seem familiar

If gender can be changed in mice by silencing a gene and inserting chemicals, why haven't we don't it to humans already?

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>>7652663
ethics, and the fact that doing it in mice doesnt mean they have figured it out, or even can, do it in humans.
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>>7652694
What exactly are the dangers of doing this to humans?
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>>7652702
Pick a bad genetic mutation...any of em. That's the risk you run.

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With the rise of DNA sequencing facilities for the public like 23andme has anyone here bit the bullet and checked out their raw data? If you did have your raw data would you even want it looked at?

Also just curious if there are any geneticists here as I looked at mine and I had some mutations that popped up that are supposedly in very important areas. Such as:
MAO A R297R rs6323 T +/+
COMT V158M rs4680 AA +/+
VDR Bsm rs1544410 TT +/+
COMT H62H rs4633 TT +/+
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>>7652621
Also opinion on the ethics of passing such genetics on if I have a daughter since male wouldn't inherit.
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>>7652621
Having a daughter would be more ethical than having a son with these mutations. While the COMT muts would only affect a female its probably the case that the mother would have non mutated genes that would compensate for the mutations present. Also 23andme only does extremely basic shit so the data is most likely reliable. Also males would inherit. Look up x linked diseases in males. All of these genes (except the last, I didn't. check that one) are x linked
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>>7652621
Also, you wouldn't want the info released. One of the guys who worked on the human genome project switched a sample containing donor DNA with his own and got caught when geneticists were using basic tools (I think ncbi) to look at some of his genes

I want to work with robots in the future. Not the ones in factories that build cars together for example, but humanoid robots.
I want to be involved in the "general design" of them, but I'm not sure what subject I have to get into to do that.
Would it really be robotics? Because that just seems like a mixture of informatics and mechatronics.
Should I study mechanical engineering instead?
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>>7652620
either could allow you to work with robots, but i recommend the mechanical engineering approach as it tells you everything you need/ want to know about robots, and then some
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>>7652620
Why do people always want robots to look humanoid??? Unless its for sex, there is literally no reason to spending time on how to design such a thing. A robot with a simple form cna perform most tasks just as good if not better than one with a humanoid form.
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>>7652620
>Not the ones in factories that build cars together for example, but humanoid robots.

good fucking luck. every engineer out of college wants to do that. 99% of everyone that gets into robotics does the " boring" stuff. if you go to a top tier university and just BTFO every course, maybe you could get into it, but i'm pretty sure that if you are posting on 4chan about it, you won't be able to pass the cut.

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why is it when we look into a mirror, the reflection is reversed, but only on the horizontal axes (x,z) but not vertically (y)? (see second pic related)
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2nd pic
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>>7652533
because our eyes are aligned horizontally, not vertically.
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>>7652534
also your 3D axes do not form a direct trihedron

what's the most cutting edge in cancer treatments?

oncolytic viruses?
gene therapy/editing?

which one, in your opinion, shows the most promise, and why?
>>
I have no idea if it shows the most promise, but metallic nanoparticles are probably something you haven't heard of.

>grow hollow gold spheres to precise dimensions and therefore precise optical properties
>attach proteins that bind only to cancer cells
>inject and wait for to collect around tumors
>see tumors easily because they're loaded with gold
>shoot them infrared lasers that pass harmlessly through...
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>>7652523
Why gold? And would they remove the spheres afterwards? Could you just have bi-yearly check-ups using this?
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>>7652529
because gold is really conductive.

How will modern civilization end?
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>>7652434
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>>7652437
Nukes?
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>>7652440
the second letter is i

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good people of /sci/ i need some coding help. i'm working on a project and i will be using trees, but i have some problem in my code i can't debug

typedef char labeltype;

typedef struct __celltype {
labeltype label;
struct __celltype *first_child;
struct __celltype *next_sib;
struct __celltype *last_child;
} celltype;

typedef celltype *node;
typedef celltype *Tree;

node lambda;

#define LAMBDA lambda

my compiler says that there is an error in the above...
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>>7652405
Have you tried moving the define to above where you first use it?
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>>7652415
yeah :/ exact same error
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>>7652405
>i

loser

>node lambda;

lambda is struct, not a pointer to a struct. To access data use "lambda.zadnji" or "(&lambda)->zadnji" not "lambda->zadnji"

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What would be a fair price for this telescope?

1/4
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2/4
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3/4
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>>7652393

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Let's scientifically discuss logistics.

What math/algorithms are used? How do they predict arrival times? What do they do to handle fluctuations in demand (Amazon easily gets 10x normal orders around Christmas)?
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how can you predict when you land at airport XX although you've changed flights 5 times?
>scientifically discuss logistics
>scientifically discuss
>scientifically
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honestly there are just factories of people that sort shit for trucks 3-4 times a day, and then a preload in most places, some nodes along the way are automated, some are post air mail, the point is each mode of transportation is a puzzle piece with a logical numeric value, and useing all of your pieces you
A. Have a computer plot out the best possible route( UPS implemented this for small brown trucks), and international node transfers alike.

B. You operate in a more domestic capacity, and have each mail truck play zone defense on the mailboxes.
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>>7652344
Also theres a fucking ton of auto scans along the way so your logistics division can just mainline data livefeed, generate a plan of action based on the past, and future trends.

>school gets \$40,000,000 in tax dollars
>doesn't spend it on new academic facilities, better teachers, new learning aids, etc
>spends every cent on a fucking stadium for 15 year olds in pads to run into each other for 3 hours for 6 friday nights out of the 52 in a year

why is this allowed?
>>
Because it will turn a larger profit

See ya later
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>>7652288
If it turns a profit, why did the city need to pass a new tax to support it?
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>>7652283
That's a really neat looking stadium though.

Also nepotism.

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Anybody got the solutions manual to Oliver Davis Johns's Analytical Mechanics for Relativity and Quantum Mechanics? The book says the solution manual is free on request, but only for instructors... and I'm not an instructor. Tried requesting (twice) waited a month (twice) and didn't get a reply,

>>
Well maybe if you aren't an instructor you shouldn't have a solutions manual
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>>7652346
Still, it would be incredibly helpful whenever I get stuck.
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>>7652349
well maybe if you got stuck, you'd actually learn the material.

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