>the machines are already knocking down and running over babies
>skynet .1alpha
its habbening.
>>8245529
I bet the child was black
This didn't happen though.
>child walks backwards
>bumps into robot and falls down
>robot doesn't see kid and rolls over his foot
Typical Americans refusing to take responsibility for their own stupidity and their own actions. Enjoy your nanny state.
>>8245529
lelelel it actually did happen
http://www.huffingtonpost.com/entry/security-robot-toddler_us_57863670e4b03fc3ee4e8f3a
http://arstechnica.com/gadgets/2016/08/ibm-phase-change-neurons/
When were you when singularity happened?
>Charles_Darwin.jpg
Richard Dawkins is a phony """"""""intellectual""""""""" who does not compare to Darwin in the slightest.
u
whot
m80
>>8245483
Nice, not singularity-nice, but still pretty nice
DELET THIS
How many of you still remember shit from high school maths from the top of your head? Obviously, I remember the most basic stuff that I use everyday.
>>8245470
Well I like to think I remember most of it, but if I can't remember something, then how would I know that I don't remember it?
>>8245484
You know you knew something, but doesn't know what something it is. You don't need all the properties of a thing to know it exists or has existed.
>>8245508
Basically this. You know you knew everything about high school algebra, like quadratics, but now you can't recall everything without needing to look up a refresher.
AT WHAT STAGE DID WE STOP BEING PRIMATES?
WHAT WAS IT LIKE FOR OUT ANCESTORS WITH SO MANY OTHER HUMANOIDS AROUND TRYING TO KILL THEM?
WERE TENSIONS BETWEEN THE HUMANOIDS AS TENSE AS THEY ARE TODAY?
WOULDN'T IT MAKE EVOLUTIONARY SENSE TO MURDER ALL FORMS OF LIFE THAT YOU AND YOUR SPECIES DONT DIRECTLY DEPEND ON FOR SURVIVAL AND SUSTENANCE?
IS IT TRUE THAT NEANDERTHALS SPOKE THEIR OWN LANGUAGES, WERE STRONGER THAN HOMO SAPIENS, AND PRACTICED RELIGION? IF THEY WERE SO SMART, WHY'D THOSE WHITE DEVILS LOSE?
WHAT QUALIFIES ONE TO BE CONSIDERED HUMAN? IF I WENT BACK IN TIME AND FUCKED A NEANDERTHAL OR HOMO ERECTUS, WOULD THAT BE BEASTIALITY?
THANK YOU VERY MUCH.
>>8245428
Well I find it stranger that people hunt and kill each other? And especially after the Neolitithic revolution which should've been the start of an everlasting state of white peace between humans. Everyone can just gather food from earth and hunt animals. Yet, the route things took in the last thousand years is logically unexplainable for those of us who seek to explore the clothes of the truth.
So what exactly happened 10k years ago? Why do humans kill and enslave each other when they can help each other? Perhaps all humans are under mind control for some really twisted other worldly originated plan? This might actually be closer to the truth. And that's something most humans will just refuse to think about, and rule out immediatelly, when its actually a whole lot closer to logical explanation than anything else.
why are you screaming
>>8245472
people get into with one another over shit, then kill each other
Is it possible to bend light by using multiple double slits in a row?
Pic related
>>8245235
I can bend my dick using multiple double sluts.
>>8245235
Anyways, If you imagine light as water, it would most likely spread in a way pictured here. So the answer would have to be no.
>>8245235
sure most of it gets lost however. after a few iterations you would hardly have anything left
This is the intro computer science course for the most prestigious university in the world. How does that make you feel?
https://youtu.be/3YD66bHehhQ?t=2m9s
>>8245144
CS majors are the dumbest majors in any university.
>>8245144
Since "prestigious" does only mean that the universtity makes a log of money and looks good on the outside... is it possible that some of the universitys programms are only meant to pamper rich kids and acquire money? I'm just asking.
>>8245144
lel they should give this course in elementary school
Got a question about nuclear explosions.
What is the absolute smallest nuclear explosion that can be achieved?
Has it ever been done?
You can put a fork in your microwave and find out ;)
>>8244948
I can answer that ;)
the smallest explosion is splitting one single U235 atom by one neutron. Boom!
Happens from time to time in nature too...
>>8244956
What determines the power of a nuclear explosion ? Is it the proton-neutron composition ?
Going into my third year as undergrad applied phys here
but I still have many questions unanswered, often the answer refers to a model that works well in reality and then explains using that model how it happens. For example if the limit of a certain function goes to y we can see using the formula that case x is true.
But sometimes there is no "why does this happen" answer given. One of the things that bothers me is why certain matter has a specific critical angle and how? I've already looked at the oscillator model because I think that the electrons in matter act like little springs but why would light at a varying angle change from reflecting to absorbing or passing? And a metal is a free electron cloud so why would that reflect light?
The frequency doesn't change when you change the angle.
There's many more question they are very handwaving about in undergrad like why does the water reflect only horizontally polarized light but the above is the main issue... (and yes I know about the models of brewster and fresnel but it doesn't qualitively explain HOW)
Please /sci/ help me
>>8244873
You need to move beyond rays and into wave to understand these issues. When you solve differential wave-type equations, you need to consider so called "boundary conditions" to properly stitch together solutions over interfaces. What you are grappling with are general mathematical features of wave phenomenon, and not just something unique to light.
I can go into more detail in another post, but the key behind TIR is that the waves going from a medium with higher index into a medium with lower index can't propagate into the lower index medium at some angles because boundary conditions on the wavevector make it so that the wave decays exponentially in the lower index medium. These waves are called evanescent.
https://en.wikipedia.org/wiki/Evanescent_field
To properly address this mathematically requires complex number wave formalism that is more sophisticated than what you are familiar with at the moment (I assume just trig). The math isn't hard, just somewhat different, and a little verbose.
You can also get other types of waves at interfaces like surface waves, waves literally guided along the interface.
>Water ... polarization
Once again, this becomes clear when you consider reflection/refraction off an interface using wave formalism.
https://en.wikipedia.org/wiki/Brewster's_angle (just for reference)
Good for you at trying to think about this stuff critically. I hope you will appreciate in time as a physicist that what you study are models, and that to be a good physicist you choose the right model for the problem at hand. Rays are the limiting case of waves when the wavelengths become small compared to the geometry of the problem, much like what you know about circuits (ie Kirchoff's laws) is really the limit of Maxwell's equations, which is really the limit of QFT, etc.
>>8244873
Read up.
If you're looking for a fundamental answer to the question "why?" then you wont get one with questions like these. Waves behave in particular ways given the boundary conditions imposed on the medium which the wave propagates through. You're entering your third year, so as you take a more legitimate class in electrodynamics you'll unearth these behaviors when analyzing problems presented in whatever text you use. And you must remember that not all models are created equal. In many cases, the model of Electric and Magnetic fields and continuous distributions of charge and mediums that have homogeneous susceptibility and whatnot are really really good models. They don't work in every case, because in fact we know that the distribution of matter is not so simple as being described by a single number. Condensed matter physics (which is built from quantum mechanics) is successful at calculating these macroscopic properties like electrical conductivity and the other values which ultimately go into calculating the refraction of electromagnetic waves.
Stay tuned and don't give up on it because it doesn't seem to be explaining things to your satisfaction. You are learning physics in its infancy, and nobody expects you to be satisfied with the simple models taught to students in the 19th century.
How much time we need to go back in time to find a human much different, in evolutional terms, from us?
What I mean is, for example did people from 2000 BC have much small intellectual capabilities than modern humans? If a somehow transported infant from 4 thousands years ago, could we raise in on same level as current human?
Or are we pretty much the same?
Sorry for English, non native speaker here
(Random picture as I'm posting from phone)
Non archaic humans popped up about 10,000 years ago. Prior to that they were anatomically similar but quite inferior in terms of intelligence.
>>8244782
>did people from 2000 BC have much small intellectual capabilities than modern humans?
No
200,000 years at least
>>8244782
You can find them today Aboriginal Australians.
So after several years of worrying about having a personality disorder, I finally got around to paying $700 to a psychologist to test me. So I ended up spending about 7 hours taking various written tests (one of the tests was nearly 600 questions long and took me nearly 4 hours to complete, I think it was called the "Minnesota Multiphasic Personality Inventory-2").
So today the psychologist told me that he doesn't want to call it a "disorder" but told me that what I have is something that he calls a "schizotypal-style personality" (not schizotypal personality disorder). He suggested that I seek psychotherapy treatment every week for 6 months for treating my anxiety and depression.
My Nurse Practitioner (the guy who's prescribing me Adderall for the treatment of Adult ADD) wanted to lower the dosage for Adderall down to 40 mg daily (I'm currently taking 60 mg daily, the highest recommended dosage) and he also wanted to prescribe me Abilify (an antipsychotic apparently for treating some of the symptoms of schizophrenia, which I thought was a bit strange since the guy is also prescribing me a psychostimulant.)
Later that week after my session with the Nurse Practitioner, I got a call from his superior (my psychiatrist) telling me that he wanted to stop prescribing me Adderall altogether as its side-effects seem to be mimicking the symptoms of schizophrenia, or could possibly be hastening the onset of schizophrenia.
The psychologist, however, told me that I definitely do not have schizophrenia and that I am too old to develop it. He also told me to not take Abilify and that I should keep taking Adderall (he told me that Adderall seems to be much more helpful in treating my depression than the actual antidepressant that I used to take back in 2014, which was Lexapro.)
What do you guys think of all this? Have any of you ever heard of "schizotypal-style personality"? Do you guys think that psychiatry is bullshit? What about psychology?
>>8244738
you ruined it with the Freud pic
delete the thread, and try again next week
>>8244738
Amphetamines will definitely cause paranoia at higher doses. Taking a personality disorder test while on high doses of amphetamine is a waste of money.
Actually, at $700, it's a waste of money no matter what. Good job rewarding quackery.
Tfw starting to have really bad memory issues.
>mad at myself for breaking 3 months sober with a shitty bender
>takes days before i realize it was actually just a dream
>ask where the other person in grouo project group is
>there never was another person, they all think i'm mad
Basically, i'm having shit like this daily now.
do I just give up on life now?
ITT things people say that make you rage
>It's not evolution, just adaptation
>>8244704
>ITT things people say the make you rage
God I hate these smug bastards
>>8244704
im a muslim.
evolution is literally adaptation though
>want to study
>go to library
>start looking at books, walk to random shelves
>2 hrs pass by and haven't even started studying
>go to coffee shop thinking it would be COMFY
>get iced tea or coffee, sit down, time to study
>keep watching people around me
>start shitposting on /g/
Fuck.
Where does /sci/ study?
I study at home, easy
In the hallway outside of class right before a big test.
>>8244532
You visit 4chan... in public?!
is it possible to fully automate the construction of a skyscraper to a single machine that would raise itself across each section that it works on?
>>8244524
Sure it's 'possible'. Construction is ripe for disruption as well...
you could have a vat of molten steel being pressed and molded in real time with revolving dies going through the I beams being set in place, that way you have a smaller volume of storatge needed for all the beams and a single machine can go atop with a massive pump and line and place them in various sizes and orientations. it would be insanely hard to maintain molten steel and keep it hot through such long piping but i wouldn't say it's impossible unless someone on /sci/ can chime in about the tensile strength from rushing the cooling phase of steel, unless you had multiple dies on the machine that could cool it on different levels.
>>8244524
http://www.nasa.gov/directorates/spacetech/centennial_challenges/3DPHab/2015winners.html
http://www.archdaily.com/591331/chinese-company-creates-the-world-s-tallest-3d-printed-building
>He thinks he's intelligent
>All he does is read articles and books others have made
Why aren't you out there coming up with your own discovery's
>>8244521
all the low hanging fruit was picked up by newton, gauss, faraday
>>8244525
How can you ever expect to pick high hanging fruit if you never even tried picking low hanging fruit?
>>8244525
Is gene manipulation viable. I'd really love to be able to fly and be stronger
Should science be public? I think it would be better if the free market handled it. Competing companies would make the best science. We would also save tons of money from government funds that are being wasted on nonproductive science.
It would be incredibly short sighted to put all focus into current needs. For example, while electric vehicles are hot right now, 30 years ago, manufacturers didn't even see the need for such technology.
It wouldn't be profitable enough for anyone to finance it. Most big companies just work for profit, not the advancement of society. Inb4 heres a bunch of said societies because, as bad as this is gonna taste coming out of my mouth, the government is still a better option.
>nonproductive science
so all science?