Is Khan academy actually a meme? Or is it actually useful for someone like me who hasnt done any calculus and only has a grade 10's (Australia )understanding of math. Is it worth going through and completing the world of math? and then even further and doing physics and chem as well? Then transfer into books?
Or am i better off just going with text books and what I can find on google? Help a mere dumbkunt here please.
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>>8216037
Your understanding of education is limited to whether or not something is a 'meme', so it's unlikely you'll benefit from it.
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um it's worth if it makes you practice and learn
it's not worth if you're gonna spend time here questioning it
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>>8216037
Your understanding of education is limited to whether or not something is a 'meme', so it's unlikely you'll benefit from it.
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Does IQ determine how successful you are in the future?
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Doll=Bat=Snail>Snake>Bird=Cat>Monkey=Bee>Reddigahara>Spook>Math
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IQ has a correlation of 0,3 with success.
Conscientiousness has a correlation of 0,3 > x < 0,4
The rest is socioeconomic with 0,3-0,4
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If you don't appreciate lolis, your IQ is automatically in the negative range.
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[math] {\bf Why~is~the~human~eye~so fucking~cool?[/math]
Direct detection of a single photon by humans
>http://www.nature.com/ncomms/2016/160719/ncomms12172/full/ncomms12172.html
Also, neuroscience general thread.
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>>8215238
I read the paper, that's actually pretty neat.
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photons don't really exist, they are just an abstract concept to represent action at the distance with particles
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>>8215238
>I read the paper
that was quick, it's been out for less than half an our.
Anonymous
So I want to go for a PhD in Neuroscience... 2016-07-20 03:22:28 Post No.8214767
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So I want to go for a PhD in Neuroscience... 2016-07-20 03:22:28 Post No.8214767
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So I want to go for a PhD in Neuroscience...
Anonymous
2016-07-20 03:22:28
Post No. 8214767
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I know optogenetics is what's really big in Neuroscience right now, but I don't like researching on rats. Decapitating and collecting the brains of rats really messed with me, and I still feel kind of sick when I was holding that guillotine...
I'm not against animal research, just feel weird doing it. Maybe I'm pussy and should suck it?
Anyways, my question is this: I know in the future EEG and fMRI research will be superseded or won't be as popular. I feel like we've got most of the experimental data possible from those 2 paradigms (both coupled and uncoupleted). I'm not sure about TMS, but I'm somewhat sure demand for it will also fall off.
Since I think older neuroimaging technology paradigms will be abandoned and I don't like animal research, then what can I do for my PhD?
I was thinking about Computational Neuroscience. Issue is the highest math I took during my BS was Calc I. I did take a Neurorobotics class though... Do you think if I just study up my math and take Calc II, Differential Equation, and a few programing classes, I can do Computational Neuroscience?
Does anyone have any advice on what avenue of Neuroscience research I should go into.
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>>8214767
>suck it?
Meant to say "suck it up". I am tired, it's late. Ignore typos.
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>>8214767
do neuroscientists... eh... decapitate the rat themselves?
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>>8214986
Yes with a guillotine.
Why do people troll? Is there any one reason, or is that like asking "why do people steal?" Is there any hard science to back up the motivations of internet trolls?
https://www.youtube.com/watch?v=5gqHTlBp6iY
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>
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>>8210239
I personally believe that people troll because humans are attracted to deception. Lying and getting away with it is fun or funny to many people. Lying on the internet is easier and therefore more fun.
When people troll, its a form of malicious deception.
>Haha you thought I was stupid but I'm actually smart
>Haha you're getting mad over something stupid because I made it up haha
>Haha you only think I'm a troll I'm actually not a troll even though I'm trolling
And of course, there's always the element of self-deception, because I don't think anyone wants to be a genuinely shitty person and thus deludes themselves into thinking its ok.
>haha its ok that I told them to kill themselves online because it wasn't really me I'm actually a decent person IRL
That said, everything above was taken directly out of my ass. So no, I have no hard science to back it up.
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In the days of old 4chan it use to be the way of sorting out the newbies and summerfags from the regulars. Everyone but the regulars would get angry, frustrated, or confused and fuck the right out of the secret clubhouse. The regulars had a weird love/hate relationship with extreme trollers with the most extreme becoming heros or anti-heros of sorts for keeping the hordes of normies in their place. Eventually 4chan got the reputation that's it's a place for trolling and attracted lots of people who just wanted to act dumb and draw attention to themselves. With lots of new people trolling on their 1st post it became nearly impossible to tell oldfags from summer/newfags. Eventually trolling just became something everyone does here and nobody quite knows why. See pic
Anonymous
Is Quantum Mechanics BS? 2016-07-25 08:22:37 Post No.8226463
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Is Quantum Mechanics BS? 2016-07-25 08:22:37 Post No.8226463
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If Pilot-Wave Theory (e.g. Bohmian Mechanics) is proven to be experimentally correct? How come the majority of Physicists still accept Quantum Mechanics? Isn't Quantum Mechanics just a lazy theory, because it relies on randomness to explain what we don't yet (or refuse to) understand? Bohmian Mechanics is deterministic, and it still satisfied Schrödinger's wave equation.
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You cant prove anything to be physically correct.
The only thing you could do is falsify a theory, which hasnt be done for qm yet.
Fuck determinism and the copenhagen Interpretation. Quantum coherence is way to go.
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>>8226483
One of the benefits of science is the ability to make inferences from previous data. A deterministic approach is far more reliable at getting accurate results than a non-deterministic one.
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qualiantum mechanics :)
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>2016
>still no cure for depression
Science, I am disappoint.
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>>8227524
there is, drugs
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Live in a country where just being alive is good enough.
ADHD medication works too.
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>>8227524
Donald Trump will cure your depression and your autism. All he needs is your vote!
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One day Shizuo Kakutani was teaching a class at Yale. He wrote down a lemma on the blackboard and announced that the proof was obvious. One student timidly raised his hand and said that it wasn't obvious to him. Could Kakutani explain?
After several moments' thought, Kakutani realized that he could not himself prove the lemma. He apologized, and said that he would report back at their next class meeting.
After class, Kakutani, went straight to his office. He labored for quite a time and found that he could not prove the pesky lemma. He skipped lunch and went to the library to track down the lemma. After much work, he finally found the original paper. The lemma was stated clearly and succinctly. For the proof, the author had written, 'Exercise for the reader.'
The author of this 1941 paper was Kakutani.
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was it alzeihmers?
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>>8226020
https://www.youtube.com/watch?v=9ydPNfN8PeI
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In the early sixties, Grothendieck visited Harvard while Zariski was still a faculty member. Once, while Zariski was lecturing in a seminar, Grothendieck kept asking him why he didn't prove his result for all schemes, not just varieties, but Zariski simply responded that it didn't work. Eventually, Grothendieck could stand it no longer and went to the blackboard and began writing down a proof for schemes. While he did so, Zariski wrote down a counter-example. When Grothendieck realized he was wrong, Zariski said (in his heavily accented Russo-Italian English) "In my time, I have had to learn many languages." At this, Grothendieck turned bright red from embarrassment.
Anonymous
Eating an animal with cancer 2016-07-24 19:52:53 Post No.8224875
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Eating an animal with cancer 2016-07-24 19:52:53 Post No.8224875
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Eating an animal with cancer
Anonymous
2016-07-24 19:52:53
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Say someone were to eat a goat that had cancer.
Is there any evidence this would be bad for the person eating the goat?
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Yeah, putting cancer cells into your body. What could go wrong.
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>>8224879
Literally nothing. Cancer is not like bacterias or viruses
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>>8224879
They're not YOUR cancer cells, though. And they'd be dead and cooked.
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Who was the first human?
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Adam
/thread
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>>8224526
Adam
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>>8224526
There was no first human.
https://youtu.be/xdWLhXi24Mo
Anonymous
Consciousness Boogaloo Part 2 2016-07-25 14:56:55 Post No.8227054
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Consciousness Boogaloo Part 2 2016-07-25 14:56:55 Post No.8227054
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Consciousness Boogaloo Part 2
Anonymous
2016-07-25 14:56:55
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A : Consciousness is a byproduct of the electrical feedback in a neural net and completely a materialistic concept ; Which means an AI when gets sophisticated enough, is conscious.
B : Consciousness is a spiritual concept and exclusively found in humans / animals ; Therefore an AI or anything synthetic will never have consciousness
C : Consciousness is an illusion as in the viewer (you) are the god, the observer and everything there is and everything else is (you)r imagination : Means that no consciousness is truly real.
It's time to make a decision /sci/. Right now more than half of /sci/ is in favor of the materialistic interpretation of consciousness.
http://www.strawpoll.me/10823371
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>>8227054
Honestly, we only have indications. A is the closest we have.
But that's just what we think. We could be doing post hoc ergo propter hoc all the time with the brain, as it is the only thing we cannot really take apart to study the same way we can with a lot of other things. We need to see the reactions while they happen which we can't because they're in our heads.
B and C are nonsense until proven otherwise, I don't really believe in B but I believe consciousness and the soul are separate entities that don't interact at all - so I'm sort of a materialist.
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>>8227091
>I believe consciousness and the soul are separate entities that don't interact at all
>soul
nigga, wat?
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>>8227091
>as it is the only thing we cannot really take apart to study the same way
Lol.
Anonymous
Mathematical misconceptions 2016-07-21 12:26:31 Post No.8217522
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Mathematical misconceptions 2016-07-21 12:26:31 Post No.8217522
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Mathematical misconceptions
Anonymous
2016-07-21 12:26:31
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ITT we discuss common misconceptions that lay-people tend to have about some non-elementary mathematical concepts
I'll start with the one I probably see the most:
>an infinite, non-repeating string in some language necessarily contains all finite strings in that language
This is typically used to assert that the decimal expansion of pi contains all finite strings of numbers from 0 to 9, even though this is currently an open problem. Also, people making this misconception tend to do so with complete certainty, and I'm extremely jealous of their confidence.
Counter-example: The binary string
'1010010001000010000010000001......'
is infinite and non-repeating, but it doesn't contain the finite string '11'.
Another kind of counter example: Take any string over any language which doesn't use one of the characters in the language. (e.g. consider the above binary string as a string over the language {0,1,2})
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>>8217522
>an infinite, non-repeating string in some language necessarily contains all finite strings in that language
This is so idiotic
If that was true, then at some point you have chunks of a trillion numbers repeated
imagine when, in our calculations, we reach that point, and assume that we found a period for pi
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>>8217522
>it doesn't contain the finite string '11'.
but you can define
00 to be 0
01 to be 0
10 to be 1
11 to be 1
and now you can find the string 11
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>>8217522
>common misconceptions that lay-people tend to have about some non-elementary mathematical concepts
0.999 = 1
Anonymous
""Advanced"" Math Questions Thread 2016-07-23 17:52:33 Post No.8222605
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""Advanced"" Math Questions Thread 2016-07-23 17:52:33 Post No.8222605
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""Advanced"" Math Questions Thread
Anonymous
2016-07-23 17:52:33
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I will start.
Use the Mayer-Vietoris sequence, [math]\ldots \to {H^i}\left( {X,\mathcal{F}} \right) \to {H^i}\left( {U,\mathcal{F}} \right) \oplus {H^i}\left( {V,\mathcal{F}} \right) \to {H^i}\left( {U \cap V,\mathcal{F}} \right) \to {H^{i + 1}}\left( {X,\mathcal{F}} \right) \to \ldots [/math], to prove that [math]{H^1}\left( {{S^1},{A_{{S^1}}}} \right) \cong A[/math] for any abelian group [math]A[/math].
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>>8222605
Cohomology with values in what? A sheaf of abelian groups? What is [math]A_{S^1}[/math]?
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>>8222622
>What is ...?
The constant sheaf associated to A.
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>>8222605
What is the geometric picture that you have in your head for the lie algebra associated to a lie group (assuming you can picture the manifold structure of the lie group, like the simple case of S^1)?
Anonymous
/sqt/ - stupid questions thread 2016-07-21 00:55:24 Post No.8216651
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/sqt/ - stupid questions thread 2016-07-21 00:55:24 Post No.8216651
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/sqt/ - stupid questions thread
Anonymous
2016-07-21 00:55:24
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Ask all your stupid questions here that do not deserve their own thread.
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What are the best youtube channels for current events in science??
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I am trying to get a bachelor's degree in Computer Engineering. I actually wouldn't mind teaching at the community college level. I heard that one only needs a Master's degree to get a teaching job. Anyone know what I should do to get hired at the community college level? Do CC even want Engineering graduates?
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>>8216652
jstor and arxiv
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Is there any evidence that dragons existed on earth? Is it possible for a dragon to exist at all?
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>>8226222
Define "dragon"
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There is no evidence at all. What type of dragon are you talking about? Like fire-breathing ones?
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>>8226223
fire breathing flying lizards that terrorist european vilalges and eat humans