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Archived threads in /sci/ - Science & Math - 285. page

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I believe global warming/climate change is happening, but I don't believe human beings are infIuencing it too much. I believe it would be happening regardless of our influence.

What evidence is there to the contrary? Im a brainlet operating primarily off of observation and intuition.
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>holding a belief about something you know next to nothing about that contradicts what the people who devote their lives studying it say
why?

I personally don't know what evidence to show you, as I study liberal arts, but when I go to an accountant I don't tell them they're wrong because what they're telling me just doesn't make sense based on my observation or intuition.
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>>9079461
We've tallied up the temperature forcings from natural sources and they are insufficient to explain the current warming trend. Only when you include temperature increases as a result of human action does it line up with the observed reality.
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>>9079461
What are your observations and what is the logic of your intuition that led you to this conclusion?

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Hello coffeeheads of /sci/, when did you start drinking coffee, for the psychoactive cocaine like substance caffeine ? How does it affect you after years of use ?
I barely feel it, unless i drink it late, then i cannot sleep.
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>>9079339
I'm pretty much addicted to it.

I feel like I have crippling depression (I probably do) if I don't drink 2 cups of it a day.
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>>9079339
started when i was 18. hated it until then. Then i tried some black and realized i really hated the milk/sugar combination. Still do, cant stand if any sugar or creamer is added to it.
Right now i drink 1 cup in the morning and another in the afternoon, religiously. Without my morning cup i start to get a headache around 2-3 pm. Doesnt affect my sleeping anymore.
It's only helped my attention/focus on things, especially while studying, but i was already attentive as a person so it probably just exacerbated it.
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>>9079368

Same here on the no creamer/sugar. I started in high school, went through a pretty kidney battering six+ cups a day phase and now I limit myself to two.

I'm kinda curious about it I can't find a decent one on Google so I thought I might find one here
24 posts and 4 images submitted.
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>>9079266
If you can't come up with it yourself you're nowhere near good enough in chemistry to possibly do it right.
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1 cup bleach.
Drink with food.
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just smoke meth its the same thing

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does quantum mechanics have a conservation of probability like classical mechanics has conservation of energy?
11 posts and 2 images submitted.
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unitarity. dissipative dynamics can be introduced into the schrodinger equation with non-hermitian operators representing probability "decay."
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It is actually more as mass conservation in fluid mechanics - where the mass of water that enters a path must leave the path unless you have something putting or removing water inside it, this is called continuity of the flow.

Similar, in Quantum Theory you have the continuity equation in the same form with different quantities, this continuity equation appears in a lot of theories and models and usually has about the same form
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>>9079137
Yes, because the overall probability always has to be one.

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redpill me on cancer
how effective is radiology/chemotherapy?
how effective are "alternative treatments" such as cannabis oil?
18 posts and 2 images submitted.
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>>9078910
Depends on the specific cancer and stage.
"Cancer" is not one disease like people think, different cancers are entirely different diseases, and they range from almost 100% curable to being 100% fucked even in stage 1.
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Cannabis oil is mostly used to alleviate pain in treatments, Chemotherapy is the most "effective" method of treatment, although not 100% effective, I would recommend it because if the pain is bad enough you can get a prescription for weed
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>>9078910
>how effective is radiology/chemotherapy?
You literally are poisoning your cells with anti-mitogenic factors hoping the tumor cells are more effected (since they proliferate at much higher rates) than non-tumor cells. It's not extremely effective as a theory, but it works fairly well when there are no surgical options. But the idea behind it is pretty fucked, that if you poison the body, the faster dividing cells should be affected more than the slower dividing cells.
When a targetted therapy is developed though, it's extremely effective, like Herceptin (Trastuzumab). It's when you cannot target stuff that chemo is a coin flip

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In all seriousness.

What is the path to becoming an uebermensch/polymath in modern days?

A day has 24h. With a part time job, a social life (gf, family, etc) and a degree to attain how (+ interests )how would one go on about all that and still excel?
14 posts and 1 images submitted.
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Read actual books
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>>9078740
the knowledge required to be a top performer in any field is way too more complex anything in renaissance times.

Most of the shit we learn in high school and in just one bachelor today is more advanced than what genius back then could develop.

Those days are over.

you can still be a well read person in a vide field of interests, since that takes just to read some books.
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>>9078740
you make it sound like all those barriers were not present during the earlier times in history. If anything, they had more working against them with things like disease, malnutrition, and war. Their distractions were usually life threatening, ours are just manufactured

Anyone else fucking hate terminology used in anatomy. Seriously, I could go through every textbook I own on the subject and rename an organ/structure to make more sense.
31 posts and 3 images submitted.
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>>9078674
>t. someone who hasn't studied the zonules of Zinn
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>>9078674
if you're pre-med, i would highly recommend either coming to terms with it or switching majors, because it's only going to get harder and more arbitrary from here.
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You mean like this

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How to have perfect teeth and gum health?
26 posts and 2 images submitted.
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get a dental cleaning twice a day every day
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>>9078521
Floss first then brush firmly and thoroughly morning and evening, and stop eating sugar.
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>>9078539
This, plus do not get old.

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Hey /sci/,

Was looking to start programming and decided on C++. I was trying to find the best way to learn it, but then heard all online resources are shit. I heard textbooks were better.

Anyways, what is the best method? Any recommended material? Thanks.
21 posts and 3 images submitted.
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The C++ Programming Language by Bjarne Stroustrup
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>>9078423
http://4chan-science.wikia.com/wiki/Computer_Science_and_Engineering#Basic_Programming_.26_Data_Structures
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>>9078423
C++ for mathematicians (Rafael Witten).

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Picture a bone. Now... does that bone have the power to move?

Now, picture that bone wrapped in muscle tissues....

Does that bone still have the power to move?

Now.... picture that bone dipped in hot grease and inside of a frying pan..........

Does that bone still have the power to move?

Now. Picture a human. What gives it power to move?
26 posts and 7 images submitted.
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>>9078213
We have a random number generator in our head and a mechanism that carries out actions throughout our body depending on what number our head generates. Our head generates a number each milisecond.

It just so happens that we have gotten very lucky and collectively we are generating numbers that make it appear like we have conciousness but in reality it is just random numbers.

Like if you wrote a program that randomly generated strings and then you make two of these programs talk to each other. If you leave this running for a while eventually one of them would ask the other to send nudes.
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you stupid OVERLY PHILOSOPHICAL DUMBASSES can't even figure this out
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maybe it is the cause of peppermint patty

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I've been in a relationship with a girl for a while but she suddenly told me she doesn't feel the same way how she did before and doesn't like me romantically anymore. It feels very sudden and has been an emotion she must have been holding up before hand. Although she's said this, she says she doesn't like anyone else and doesn't want to be in a relationship with anyone else. How does this happen? For someone to just stop liking you out of the blue but not have a ulterior motive, is there a psychological explanation for this?
You'd think you only stop loving your former partner when you've been seeing a different one, or have an eye on somebody else.
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>>9078005
chad flirted with her and she is making sure her options are open.
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>>9078005
>>>/adv/
There is appeal in being single. She got bored of you or realized you're not the kind of person she wants to be with. You figure that out as you go.
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>>9078005
No OP. People don't change. You have the same preferences you had when you were 18 I'm sure.

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Why is the diagonal of a square longer than the sides?
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>>9077884
by definition brainlet
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>>9077884
Make a triangle where the other sides are bigger than the hypotenuse and I will forward you my bank info.
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>>9077889
But why is that impossible?

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Does /sci/ like Bellcurve grading?
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>>9077825
No, college classes for the most part aren't competitive. They're mills.
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The professors who do this are the same kind who take personal offense when you don't show up to class.
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Tfw the average grade in engineering design module was 20%
TFW to rectify this they added 30% onto anyone who didn't get 0

>ended up with 75% despite almost failing the exam.

Kek

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I make a random post on a fast board like /b/, what are my chances of getting dubs or trips? Similarly I make the same post 100 times at different points in time, what are my chances of getting dubs or trips?

You should be able to answer this.
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>>9077807
50%, same as everything. You will or you won't.
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>>9077807
100% in my case.
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1/10th chance for dubs, 1/100 chance for trips, 1/1000 chance for quads etc

except on places like /v/ where they blocked them

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Someone explain to me what this means? It doesn't make any sense at all to me:

'In the paradox of Achilles and the tortoise, Achilles is in a footrace with the tortoise. Achilles allows the tortoise a head start of 100 meters, for example. If we suppose that each racer starts running at some constant speed (one very fast and one very slow), then after some finite time, Achilles will have run 100 meters, bringing him to the tortoise's starting point. During this time, the tortoise has run a much shorter distance, say, 10 meters. It will then take Achilles some further time to run that distance, by which time the tortoise will have advanced farther; and then more time still to reach this third point, while the tortoise moves ahead. Thus, whenever Achilles arrives somewhere the tortoise has been, he still has some distance to go before he can even reach the tortoise. Therefore, because there are an infinite number of points Achilles must reach where the tortoise has already been, he can never overtake the tortoise.'
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>>9077718
What don't you understand?

Are you saying you don't get the premise? Or you don't get the "solution"?
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>muh limits
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>>9077722
If Achilles can run faster than the tortoise, then eventually Achilles would catch up with and overtake the tortoise as his speed is much greater than the tortoises'.

After 100 meters Achilles would gain on the tortoise in the same given time period, as the tortoise is only going 10m each time when Achilles is gaining 100 each time...

I don't understand why this is a paradox... it's just incorrect.

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