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/sci/ Science & Math

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Most viewed threads in this category

Why Time Travel Should Never Be Attempted

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Now, when I say this, I mean traveling "back" in time. Now, the reason for this, is the Infinite Loop. What is the infinite loop? The Infinite Loop is what would happen if someone were to travel back in time, and fail to meet their original point of insertion, to be more precisely, the precise time at which they traveled back in time. This would cause time to infinitely loop back and forth from the present to the past without ever reaching the future, because the Present is the constant at which the future is judged and created, and without that constant, there can be no future. Why is this? Well, assuming that alternate timelines don't exist within this same universe (and why would they), there is a constant that is always present which signifies the future, or at least what will be, this being the present. If the present, or some aspect of it, were to travel back in time, along with it having already of happened at some point, it would delay the future from occurring, since now the present has been replaced back in the previous line of time. The only way this problem could be fixed, would be for the present to eventually return back to its current timeline, and not through the regular process of time, since then that would effectively cause the entire universe to split in half (imagine someone tearing a piece of paper in half to create to separate pieces). The present would need to return back to the exact infini-second (word I made up to signify the impossibly smallest increment of time that's calculable) in order to prevent this split from occurring. The reason this wouldn't be a problem for traveling into the future is quite simple really, you wouldn't be forcing a loop. The constant would simply be moved ahead instead of being looped infinitely to satisfy the future, which is actually the present. If we've already had time travelers in the future, then we're screwed.
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What do you think of Elon Musk and his vision of the future? He basically implies that consciousness is just a very complex form of computers. http://waitbutwhy.com/2015/05/elon-musk-the-worlds-raddest-man.html

/sqt/ - Stupid Questions Thread

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Inquiries of the inept.
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Can we get a meme science thread. Black holes
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How do I build a time machine?

Psychology faces crisis

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Psychology faces a major crisis as a recent review of major scientific work. The review found the majority of Psychological findings are unable to be reproduced with the same results. Which breaks a key rule of the scientific method. Entire area of science now in question. Psychology is kill. http://www.nature.com/news/first-results-from-psychology-s-largest-reproducibility-test-1.17433
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>We need more women in STEM Personally I'd like to see more female boilermakers, pipe fitters, roofers, miners, mechanics and so on.
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will drugs really fry my brain ?

Python help

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John [1, 5, 4] Lucy [4, 9, 8] Alice [6, 10, 3] These are the contents of a text file. It shows a student's name, followed by a list of their scores in a maths quiz. I need to "r" this and: >sort the students in alphabetical order with each student's highest score >sort them by the highest score, highest to lowest >sort them by average score, highest to lowest. I should be able to run the program, type in one of the three ways of sorting it and it should print out the sorted list. A solution with an explanation would be ideal.
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What is /sci/'s opinion on artifial super intelligence and it's implications for human kind of it ever becomes a reality? I just read this article http://waitbutwhy.com/2015/01/artificial-intelligence-revolution-2.html And it blew my fucking mind.

LATEX practice thread

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Post your equations and other anons attempt to copy it in tex

Complex Numbers

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In a philosophical sense, what do complex numbers mean? Are they just a clever mathematical trick that works for certain problems or are they a physical quantity that has meaning? From my understanding, the imaginary part is always ignored at the end of the problem/ calculation. Is this always true? Is there a problem when the imaginary part has some actual, physical meaning? As far as I've gotten in physics, they've been mostly used so that you can equate the functions e^x and the real part of cos(x)+i*sin(x) so that the real part of the integral of cos(x) can equal cos (x) (and the same when you differentiate it). Apologizes in advance for lack of latex, i just don't know what I'm doing when it comes to the syntax.

Ceres bright spots back in view

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What is it? Ayyliens? Ice? Larger gif >https://www.nasa.gov/sites/default/files/thumbnails/image/pia19547-1041b.gif

Certified climate change course

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There's a certified course on how to be a good goy on climate change. https://www.edx.org/course/making-sense-climate-science-denial-uqx-denial101x Why haven't you enrolled yet ?

Rewriting the reward system

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Does porn do this ? >Sexual Identity Crisis in Young Men http://www.bbc.co.uk/programmes/p02qyfc7 >Psychologist Philip Zimbardo’s latest book Man (Dis)connected argues that the excessive use of video games and online pornography is pushing young men into a crisis of masculinity that leaves them bored at school, disinterested in human contact, and opting out of society. He is famous for the controversial Stanford Prison experiment in the 1970s which showed how easily the male subjects could be manipulated into behaving like sadistic guards or passive victims in a controlled prison environment. He explained what he thinks needs to be done to help young men. >Porn and video game addiction leading to 'masculinity crisis', says Stanford prison experiment psychologist http://www.independent.co.uk/news/science/porn-and-video-game-addiction-are-leading-to-masculinity-crisis-says-stanford-prison-experiment-psychologist-10238211.html
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I'm tired of writing on windows. Should I get a blackbaord or a whiteboard for my apartment? How messy are blackboards in reality? Part of me would love to use chalk.
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A brain could, in theory, do anything a computer could, right? So we could totally make telepathy a thing if we just figured out how to make wifi out of meat, right?
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So let's say you are in a position where you can double the progress made in one field of science over the last century. The tradeoff: you have to erase all progress made in another field of science, of your choice. Which two do you choose?
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How high is your IQ?
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Well..which is superior and why?

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