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Archived threads in /sci/ - Science & Math - 128. page
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>just study real analysis
>if you study hard you can do it :^)
>each problem takes at least 3 hours or more unless i look it up
>answers jump a lot of stuff because its intuitive apparently
>people in my class are either way ahead of me or dont kno nothing like me
>read definitions like a slave but stil dont kno how to use it for my homeworks
>le study hard meem XD
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is there something specific you need help with? or did you just want to complain since you're too lazy to study and practice?
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ayy lol I'm in the same boat midterm cumming up soon definitely acing it haha
>>
i have 11 problems due tomorrow and right now we just started sequences and defining limits.
i am between panicking and saying fuck it and use my one time drop.
i have all 70s in my hw and everyone else is getting 90s
and i dont want to fuck up my gpa with a meem class when i could have taken intro to real and still get a job as soft eng
yes my love for learning mathematics has died because i found my limit
i did 3 math classes last semwster and i thought i could handle real analysis
wtf

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>mfw there are people on sci RIGHT NOW who don't know calculus
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it's not knowing that's hard. it's doing the excersises so you can recall menial shit like cos'(x^2)= cos(x^2) * (2x)

or what the trig identities are. along with their inverses.

like am i supposed to know that cos(x)=sqrt(sin(x)-1 by heart?
>>
>>8389842

>like am i supposed to know that cos(x)=sqrt(sin(x)-1 by heart?


Why is that so hard to remember? You can remember the quadratic formula, can't you? This is even simpler.

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Is this the right place to discuss fossils? I've never seen fossils/paleontology threads here, but I'm not sure /an/ would be the right place either.

Anyways, if so, just a fossil general thread.
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>>8390964
usually those threads get buried under a pile of math/physics bullshit
>>
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>>8390971
Ah, that explains it. I guess I'll start by showing my collection, it's not too big but I like it.
>>
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>>8390973

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I'm bored as fuck, /sci/. Give me some math problems.

Give me something that involves some calculus or something. None of this baby combinatorics shit.
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>>8387952
>>
>>8387952
What is the dd(x) of (e^2(sinxe)^-(2/e^2))/2?
>>
Find the centroid of the region lying between the graphs of the functions over the given interval

Y=sin x
Y=cos x

[0,π/4]

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Does it concern any of you that everything that has exists and will exist will one day just be gone. Not only the human race, but everything. The planet, the galaxy... EVERYTHING. All of our accomplishments and advancements will have been meaningless.
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>>8387665
yes.
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>>8387683
This is what keeps me awake at night.
>>
>>8387665
yes

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Why are so many CS students so cringey?

This kid just mass mailed this out to the entire class. I seriously feel embarrassed for him.

Thank god I only have 2 more CS classes to take for my computer engineering degree, the other engineering and math students are usually more down to earth.

Post your cringiest CS student stories
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>>8378956
>white hat hacking government systems
i can't even wash the cringe and stupid out of my eyes.
>>
>>8378964
That, plus the title, plus his threats to snitch to the prof, plus his """cool-guy""" picture at the end
>>
I'm a cs major and there's not that much cringe in my class but I go to a pretty good school, the closest there is to cringe is talking about memes on facebook group chats (never in real life) and maybe the occasional literal neckbeard (but the neckbeards are generally pretty smart and chill people)

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>nobel prize in medicine
>awarded to guy who did undergrad at university of tokyo
>nobel prize in physics
>awarded to three people who did undergrad at university of cambridge

Why even live if you didnt go to an elite university? Your education was worthless and you were surrounded by brainless normies instead of the future leading scientists, businesspeople and artists
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>>8390715
>businesspeople and artists
Poor bait. Now kys yourself
>>
>>8390715
IQ is largely hereditary and I was unfortunately not gifted. People who were can become great men and women and discover things that benefit me and mankind. I can contribute to society in my own way and they can theirs.

Although tbqh, the fact that even at high IQ's and highly educated brackets of people political opinion is still split massively from spectrum to spectrum shows that even they are motivated by base human instincts and not above irrational thinking.
>>
>>8390715
>undergrad
the least important part of your university curriculum

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> If you have been on sci for at least a couple months, you probably noticed, that overwhelming majority of threads can be summed up by the following categories:
>
> Gorilla threads - primitive baits about fundamentally unscientific questions, that is, questions that cannot be logically defined. Full of moronic sophism and absolutely proud to be retarded.
>
> Religion/philosophy threads - questions/theses that clearly don't...
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Thank you anon. Keep posting the same thread on /qa/ with a captcha poll. Because /8gag/ trumplets will spam them with those primitive programs.
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>>8386422
Go for it OP. Also tell hiro to FIX FUCKING LATEX.
>>
>>8386422
Another kind of thread I absolutely despise is the /pol/tard in disguise. The guy who goes on here with his not-so-subtle "is it true niggers have a lower average IQ?", and then CONTINUES to get 200+ replies every single time. He is the same guy that gets BTFO at the dinner table by his mom, runs to his computer because "look at the SCIENTIFIC EVIDENCE MOM!".

I don't care that you are a /pol/lack, I even browse /pol/ myself, but PLEASE PLEASE PLEASE keep /pol/ in /pol/. For one second I just want to be able to talk about Hilbert spaces without being reminded of JEWS NIGGERS KEK HILLARY CAN'T STUMP THE TRUMP OBONGO ALSO THIS REALLY MADE ME THINK WHITE WOMEN ILLEGAL IMMIGRANTS RAPEFUGEES ALT-RIGHT NATSOC JEW FAGGOT.

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What do you guys think about psychiatry, psychology, and other mental health care-related fields?

I ask because, so far, I've been diagnosed by both a psychologist and psychiatrist as having four different disorders: Major Depressive Disorder, Generalized Anxiety Disorder, Social Anxiety Disorder, and Attention Deficit Hyperactivity Disorder.

However, I can't help but notice that most people don't consider these to be real "illnesses" and that these things are entirely "in your head" and that you can easily "will yourself out of" these problems. In fact, even I'm not sure that I believe these to be real illnesses.

Nobody in my family (or anybody else, for that matter) seems to give a single fuck about me having been diagnosed with these disorders. A cousin of mine simply scoffed at the idea of me being diagnosed with ADHD, making a dismissive gesture and proclaiming "everybody has ADHD!" My mother tells me that I need neither medication nor psychotherapy, that I should use my own will power to stop having depression. Other people tell me that social anxiety isn't a "real problem".

I've taken antidepressants and anti-anxiety medication in the past, and they only increased my misery tenfold.

Meanwhile, my psychiatrist wants to stop prescribing me Adderall (which I've been taking for nearly two years) because it might hasten the onset of schizophrenia. Mind you, as far as I know, nobody in my family has been formally diagnosed with schizophrenia. And the only reason my psychiatrist is concerned about this because I told one of the nurse practitioners who works at this same practice that I wanted to be referred to a geneticist to have myself tested for any possibly genetically inheritable disorders and/or diseases (such as: Alzheimer's disease, schizophrenia, antisocial personality disorder, etc.) And my psychiatrist wants to prescribe me Abilify instead.

So do you guys think that psychiatry, psychology, and/or other mental health care-related fields are bullshit?
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they are not science

the disorders you have been diagnosed with are not scientific diagnoses

you should stop taking adderall. dont take any psychiatric medication, its all bad. for you.
>>
>>8354964
They won't hear you. American culture is based on "magic pills" to success.
>>
I think most disorders outside of schizophrenia and bipolar disorder are mostly a meme and not nearly as disabilitating. Or they are at least a hell of a lot easier to manage.

t. schizophrenic

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When will we remove this atrocity from academics?
Who is to blame for creating this stupid system that restricts proper thinking?
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Thiz>>8389335
This can't be real...
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>>8389335
In my country teachers study at the same universities as regular masters (I'm in the last few months of physics). You kind of get an impression of what the average teacher is capable of and holy shit it's embarrassing. The problem I think really is that nobody gives a shit about teaching any longer. It's poorly paid, features no authority any longer and nobody respects it. As a consequence the people who go for it are usually the people who simply don't know what else to do. And that's exactly...
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>>8389335
People who want to confuse the populace and keep them ignorant and stupid. People who can't think for themselves are easier targets for consumerism.

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How come if a car traveling at constant velocity hits me I feel a force? You physicists are dumb, you never think of all the little things you get wrong.
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>>8389978
>How come if a car traveling at constant velocity hits me I feel a force?
How do you know? Have you ever been hit by a car before?

You actually don't feel a force. This is a fact, provable by the laws of physics.
>>
>>8389978
>How come if a car traveling at constant velocity hits me I feel a force?

You don't feel a force, though. But don't take my word for it, go see for yourself!
>>
>>8389978

normal force.

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if they come from an Earth-like planet and the humanoid shape is very succesful here, so why not somewhere else?
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I feel that it is highly unlikely, we are not perfect for the environment, just good enough to survive.

I don't think that most other planets will even have multiple genders . So inefficient.
>>
>>8387603
Humans look like humans because we evolved on earth, so no.
>>
>>8387603
>scientifically possible for aliens to look like Humans?
Does adding "scientifically" somehow makes this question less ridiculous for you?

>>8387611
Everything you said is bullshit, why even bother to post.

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Or is it just another new age brain washing agenda?
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>>8386762
I only managed to do this twice. Your brain stays up though, which defeats the purpose of sleeping, because when you sleep, brain connections are restored. When you lucid dream, your mind stays up, therefore you will be so fucking tired afterwards. Its not worth it, and its not that special anyways.
>>
>>8386762
It feels like reality - except you know you're dreaming.

Everything is more clear as if there's no visual filter or anything - for example my bad eyesight is not obvious in lucid dreams.
>>
Its real and not hard to archieve
Only a matter of time and training. Start by writing a dream diary

You have unlimited budget and 10 years time to extinct all human targeting mosquito species or at least make them never go to any humans again. What do you do?
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>>8391997
>Drill down to the center of the earth
>Build a giant-ass pump
>Pump out all the iron from the earth's core
>Watch Earth implode
>No more mosquitoes
>>
become corrupt as fuck and embezzle as much as possible
>>
>>8391997
>release huge populations of genetically engineered male mosquitoes of each targeted species
>observe as they reproduce and mosquito population crashes
>profit

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Is it normal to feel like your intelligence is deteriorating?
Over the past year or so, I find it harder and harder to put my thoughts into words. Compared to most people on /sci/ who can form coherent sentences or arguments, whatever I end up typing comes out completely retarded, and usually not what I intended to say, or at least not properly expressed right.
And I feel like this is constantly getting worse. How do I fix this? Read more books? I haven't really read or touched liberal arts in over a year, maybe its necessary to not turn into a babbling retard. Even...
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>>8391733
>Is it normal to feel like your intelligence is deteriorating?
>tfw you will never experience this
>>
>>8391740
right, you can't experience deteriorating if you never had it in the first place
>>
>>8391733
I know this feel as well.

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Why is it logically possible to randomly divide variables like that? What are the laws of doing this?
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>>8391539
Because you're just multiplying by 1:
[eqn]\frac{\frac{1}{r}}{\frac{1}{r}} = 1.[/eqn]
>>
a/b = (a/c)/(b/c) = (a/b)(c/c) = a/b
>>
>>8391539
>Why is it logically possible to randomly divide variables like that?

Are you for real?

a/b = (a/k)/(b/k)
because
(a/k)/(b/k) =
(a/k)*(k/b) =
ak/kb =
a/b

What rules am I using? Only one rule: (R,+,*) is a field.

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>professor knows the class wont answer his question so he looks directly at you until you give the answer
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Just answer the question you millennial antisocial fuck.
>>
i always just pretend to clean my glasses. no direct eye contact
>>
>>8391127
Our generation is fucked.

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I just read through a recently published article about the psychology and reasoning behind why people get so infuriated with poor grammar. It referred to a small study made by a linguist (a Finn, I believe), and basically arrived to the conclusion that it's a way for people to establish social status over others. No different from judging people by their wealth, looks, clothes, or grasp of some specific etiquette.

I could not possibly disagree more. So I thought I'd like to hear /sci/'s views on this.
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>>8391001
>(cont.)
Personally, I've always been a grammar nazi. Now yes, I do make my own mistakes as well. After all, English is my third language. Despite that, regardless of the language used and how familiar you are with it, I don't see a problem in making the occasional mistake. I see a problem when someone makes constant, basic mistakes, all the time... and then gets all offended when someone points it out to them, or suggests they should improve themselves.

This is not...
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>>8391001
>why people get so infuriated with poor grammar
>arrived to the conclusion that it's a way for people to establish social status over others
I agree with this, it's also quite obvious, if you think about it.

Im a massive grammar nazi, even though rationally I disagree with it.
In german, for example, if in a university context you use the wrong grammatical gender for something people will look at you funny.
but honestly, grammatical...
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>>8391018
I think english actually works very well. There's no telling that any planned language we adopt won't morph over time as every other language does, which would somewhat defeat the purpose as we'd likely end up with a similar language to the present one.

We naturally adapt languages for efficient communication based on our experiences using the language is basically what I'm saying, and these adaptations do not necessarily need to follow well thought-out or structured rules.

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How can I tell if I'm a philosophical zombie?
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>>8390886
I thought this was 'something', then I noticed:
T. Shitposting Computer '/Sci/entist'
>>
>>8390886
We have programmed behaviors like looking for sex and money.

P-zombies would only do programmed behaviors.

So ask yourself. Did you choose your major only for the money? If yes, you are a zombie.

Following this we find that the only real human beings are mathematicians and, unfortunately, philosophers. People who chose a careee that has no obvious path to money.

But I also consider philosophera to not be human beings. They are sub human. Therefore the only full humans are mathematicians.
>>
>>8390889
>We have programmed behaviors like looking for sex and money.
>P-zombies would only do programmed behaviors.
Is this /retard/?

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I am a PhD candidate who specializes in the Kosterlitz-Thouless transition. AMA.
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What?
>>
Paper or plastic?
>>
>>8390804
Those two guys just won the physics Nobel prize, anon

Can an actual physicist confirm my long held suspicions that riding the Polar Express would fucking kill you?

https://www.youtube.com/watch?v=COdoHpU_a8U
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Let's say they're travelling at around top speed, 90mph, and they descend a 179 degree track for 200m, wouldn't the air resistance alone fuck you up?
>>
>>8390708
If the Air resistance is greater than the gravitational pull, it will slow down to terminal velocity where the air resistance + friction equals the gravitational pull
>>
/sci/ would never know but railcars are absolutely filthy things, especially the roofs which are never ever washed. As a result it's very oily and anyone on top of them would likely slip off as there is no place to grip.

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So.. this is bullshit right? I don't know these things at all.If not, it's badly written and didn't cite a single source. I don't know these things. I hail from /lit/ but I know that when you're trying to convince me of a miracle cure you speak to me in terms of how it provided the chemical conditions necessary for change. You don't just do.. this..
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>>8390576
Whoops, forgot link:
http://www.newsrescue.com/secret-uncovered-cancer-not-disease-business/#axzz4Lwb1zgU3
>>
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>>8390576
>>8390579
really makes you think
>>
>>8390583
Thanks for that contribution.

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>If B then C, thus if (A and B) then C

Why the fuck can;t I wrap my mind around this? Can anyone do a proof?
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(A and B) then B
B then C
>>
>>8390509
How is (A and B) then B logical?
>>
>>8390522
Maybe I'm just dumb but let me give this a shot:

(A and B) is the intersection between A and B so it is a subset of both A and B. So anything in (A and B) is also in B. So we can say if B then C, thus if subset(B) then C as an equivalent expression

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Stephen Hawking says that the universe can spontaneously create itself out of nothing. I've been thinking about this a lot lately, but I haven't been able to talk about it much with others. I remember someone else saying something along the lines of, if you put together all the matter, energy, dark matter, dark energy - all the stuff and anti-stuff - in the universe, you get a zero sum. If we can apply Occam's Razor to the question, why is there something instead of nothing, it seems like the simplest answer is that something, everything, is technically nothing....
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>>8390463
It's not Hawking speaking, it's his chair.
Case dismissed.
>>
You can either zero sum or use CHIM
>>
>>8390471

https://www.youtube.com/watch?v=7fW1eWuQkCE

What is the fear of a scientist? (or fears)

Many people may be afraid of something silly things when talking about them, for example: The end of the world, the control of governments and other conspiracy theories.

One thing that has given me fear is the decay of false vacuum, it is something that will occur in billions of years (this would occur if there is no physical more than the standard model) I will not be a witness to this event but still scare me (I have no idea why, but I think I have an existential fear with exotic deaths)

Returning to my initial...
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fear of unemployment
>>
>>8390449
OP here. I expected a similar response.
>>
>>8390444
I've found the lower scaling limit to the characterization of any n-dimensional black-box problem. I've decided not to publish this proof to preserve everyone's sanity, hopes and dreams.

My fear is that future generations will find this, see how bad it is and kill themselves.

>brb, killing myself

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That is indistinguishable from what we are experiencing right now?
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rely majk u tuiink
>>
>>8390287
lrn2luciddream
>but i want VR at the push of a button
fuck you, earn it lulz
>>
if current trends continue

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What happens when we die?
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>>
You are reborn and realize that this message belongs on >>>/x/
>>
>>8390248
Depends what you put in your will.

If you chose cremation they will bake you in a oven until you are a pile of dust.

If you chose burial they will put you in a box in the ground.

Make sure you are fully dead because neither of these are fun for the living.
>>
>>8390254
Im going to cremation your mom

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So i know the mass is irrelevant i was going to use the equation 2(a-4*9.8)(5100)=Vf^2 but i dont know what the final velocity would be
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could i replace Vf^2 with (at)^2 and solve for a = (a-4*9.8) and t=20?
>>
You could solve it graphically by making plots of altitude, velocity, and acceleration.
>>
>>8390183
against what? time? i half no idea how to solve it graphically though i heard you can do that and then just integrate to find the area under the curve, not sure if thats what youre referring to

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If you eat something your body can't digest, will you be full forever?
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>>8390158

No, you'll just shit out undigested food. Have you seriously never done this before?
>>
>>8390158
WORLD HUNGER SOLVED
>>
>>8390158
The problem is not the fact that your stomach feels empty, the problem is that your body would still be releasing the hormones it would normally release if your stomach was empty, even while being full of the inert substance.

For example, if you drink so much water you can't hold any more, but don't eat all day, your body will still release the hormones it generally would when it was low on glucose. So really all you'd accomplish is having to eat many small portions to become satisfied.

There...
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http://www.newtonproject.sussex.ac.uk/prism.php?id=1

seperated in 4 categories

Alchemical
Mathematical
Scientific
Religious

you can read most of them


what an autist this guy was
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>>
cool!

thanks for this
>>
religious? WTF

Isaac Newton wrote religious shit?
>>
>>8390018
I bet you didn't even know he was an MP.


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