I read it and I still don't get it. Do we have time travel or not?
>>16871556Special relativity has busted time 100 years ago. Let c>0 and Q(x,y,z,t):= c^2t^2 -x^2 - y^2 - z^2. SR (the first two pages of any SR manual) says: if any two observers are in inertial motion with respect to each others and if they witness two events A and B occurring at dates t_A and t_B, at locations having coordinates (x_A,y_A,z_A) and (x_B, y_B, z_B) respectively, then the quantity Q((x_A - x_B), (y_A - y_B), z_A - z_B, t_A - t_B) has the *same value* for the two observers. This instantly destroy time (apart proper time which applies to single objects only) since for any real number u the hypersurface P_u:= {(x,y,z,t) | t = u} of "events occuring at time u" becomes dependent of the observer (changing the reference frame changes even its direction, making it de facto fictional). The so-called "Andromeda paradox" is nothing but that fact at large scales.
>>16871556To travel through time, one must understand what it is and how it functions.Humans understanding of time changes as we discover more about our universe. Currently sciences models of the universe (quantum mechanics) state that time is an independent factor from space. The problem with most time travel examples is they use loopholes in mathematical principles to try and justify the possibility. As science changes, so to do the hypothesis's. Ultimately the only way to travel through time that is verifiable via the scientific method is going from the past into the future. >>16871588>It's a man made conceptNo and yes. Time is a clear force on our universe humans have observed. With or without humanity time will still exist. The perception of an object is not the object itself.
>>16871588Bravo, Anon.Hey everyone look, the greatest thinker from >>>/lit/ has visited us lmao
>>16871556basically it is a very cool rewind tape, not much to do with time
>>16871556it's actually pretty sad how bullshit this isthey used a "meta material" as a delay line material, but they did an inverted delay. seemingly its more solid state than just an analog delay, but they had to use so much control logic to pull this off that I really doubt this is any better than a programmed DSP which can literally do the exact same function
SFG is dead- edition previous >>16868797
>>16874315The guy who launched the waste-of-time lawsuit
>>16874330He didn't just waste time, but also completely fucked the state's tax revenue through a sympathetic activist judge who destroyed the state's dependability in legal jurisprudence.
>>16874300>>16874307Can't wait to watch. Remember Big Jim's town halls fondly.
>>16874313No, it was mostly answers that you've heard or read about throughout his congressional hearings. He says he still has tons to catch up on.
He did as good as could be expected, while walking on eggshellsHopefully he gets some degree of autonomy down the road, but its clear which strings are getting pulled and how hardHe's taking it like a fraternity hazing process, once the humiliation rituals are complete, he can take the ball and run (hopefully)
I’m a grad student. I used to love math. I thought it was so beautiful and I’d just spend my free time looking through math articles on Wikipedia or listening to YouTube channels with great explanations and just be at awe at the beauty I was seeing. I look at the same concepts and now I feel numb. I’m not even angry the joy is just gone. Academia took something I found creative and beautiful and turned it into a source of stress and mental anguish. That’s evil incarnate
>>16873126>i publish as independentOh you pay APCs out of your pocket?
>>16873203>NUMBERS AREN'T REALpedo logic
>>16873212Free to publish not the top journals hybrid oa, you pay nothing but not free to read
>>16873215it was a joke, you fucking actual pedophile
>>16873221>n-n-no you're the real pedo!wow how much IQ points did you spend to come up with that one?Stop projecting, your confession is not needed, I don't care about your attraction to little kids.
Like orcas for example, orcas are viscious psychopathic hunters but never attack humans in the wild. Orcas have high intelligence yes, but I know there's other examples too, like Polar Bears are the only species that actively hunt humans, and lions are naturally scared of humans. How does something like that happen? I get the logic that all the brazen animals who approaches humans gets killed, therefore only the animals who are wary of humans survive, but do they really "teach" their offspring that, or is it something inherent biologicially? Just a question I was thinking about. How does evolution work in the way that it makes certain species wary of other species?
>>16872254That would make Orcas even smarter than we thought
>>16872432>animals are smart>even dogs and cats have the intellect of a 3 year old human childThat is literally retarded, though, if someone said you had the intellect of a 3 year old, they wouldn't be complimenting how smart your are, they would be saying you are retarded in a nicer way.
>>16873179Learn your history. The "classical" view of animals is as objects that move. Attributing the ability to think and feel to them is a massive step that many still haven't taken. However, animals ARE stupid. You aren't wrong there.
>>16873202>The "classical" view of animals is as objects that move.Same with children, they still don't have full human rights because of that "classical" assumption.
>>16872244humans are brutally retaliatory, just look at what happened to wolves, the only ones still thriving are the ones we turned into our slaves.Animals that mess with humans are usually too stupid to know better, breed too fast to care, or have starvation madness.
Thoughts on this guy?
>>16843481The earth is flat and stationary with a dome. Brian Cocks is a globohomo puppet whose life's work is based on the globohomo space model and mysteries.
>>16843481Seems like a cool dude interested in cool things
>>16843481Faggot.
>>16868217>The earth is flat and stationary with a dome.are you a sand person from 4000 years ago?
>>16843481cute
Why are math textbooks so expensive? Do other STEM fields face the same thing? Whats your favorite textbook that isn't ungodly expensive? Can't believe a reference book is worth 34$ more to a Bible.
>>16871578Books in general have become more expensive in the last few years. Despite the quality going down since textbooks are now all print-on-demand on shit paper and binding.Get a printer.
>>16872427The authors are dead too most of the time. Where does the money even go.
>>16871578>Why are math textbooks so expensive? Pirate them>Do other STEM fields face the same thing? Yes, physics and software also suffer from same publisher jew tricks.>Whats your favorite textbook that isn't ungodly expensive? All are expensive, just pirate them from annas or libgen.
>>16872817Fucking software textbooks are priced high?
>>16871578Smaller audiences, higher per unit costs.Read a math book and learn to math, maybe.
irl I'm an esteemed doctor.. but here.. here you don't respect me.. why?
>>16872383It is my right to know the genetic heritage of any blood transfusion I receive. You need to respect that.
>>16872383and im the queen of england
>>16872748
>>16872383Desu most of the stuff you prescribe is probably outdated boomer garbage mogged by all sorts of random research chemicals.>t. using dozens of non-FDA-approve anti-balding treatments and no FDA-approved ones
>>16872979Sometimes the discount Chinese doctors try to use that pigs blood in you. You need to watch out for that. Pigs blood is close enough to some, but it ain't the same, really.Green Monkey blood too. It's got the AIDS.
I'm looking to learn graph theory and am wondering which book would be a better choice, "Combinatorics and Graph Theory" by John Harris or "Graph Theory" by Reinhard Diestel? Thanks in advance, autists.
>>16870019I checked this series and found it hilarious that it has like 5 linear algebra books with programming applications and exercises. But none for graph theory relevant to this thread.
aww shieet topological optimization cuh
>>16871218>every matrix is certainly not a directed, weighted graph>and every graph can not be represented in matrix formDear me.
>>16871218I skimmed the "Linear Algebra, Data Science, and Machine Learning" from the series. It looks promising. Covers everything, a lot of exercises, has programming exercises, has solution manual for 1/3 of the problems on website, 1 chapter for graph theory stuff.The main issue is the typesetting imo, feels like they try to cram as many things as possible on a page, making it hard to read. Doesn't look like older springer books. But it could be just the pirated version. Also a lot of the figures like the plots needs colors. So you can't just print the book B&W.
>>16869110Annas, etc. unfortunately doesn't have a good copy for the 6th edition. But there is one for the 5th edition.
I have this ambition to learn everything I can, and I would like to ask for advice and may get other people to join me.I'm making a roadmap of science. Simply put, a series of subjects and projects (since that is how I learn best) and I would like some contribution from others , since I don't know what I don't know.So tell me! Things about your field, experiments and projects, easy or hard ! How to get there and where to go from there !Maybe I one day when this is complete I can figure out a way to distribute it to school with appropriate resources (science education is lacking imo)
Did we overreact to Chernobyl?
Chernobyl is actually not that dangerous of you have proper gear
>>16871930the problem is that isotopes ACCUMULATE through the food chain. yes you can visit chernobyl just fine, but you wouldn't want to live there, drink the water, eat from a garden and hunt in the forest. incidentally, because of that the wildlife is doing amazing. theres large populations of wolf, moose, european bison, beaver, wild horses... turns out human activity is more harmful than a reactor blowing up. some with the bikini atoll. theres no fishing going on there because its all irradiated and no theres large healthy coral reefs and incredibly healthy fish populations
I have published papers on the subject. >>16871930There are multiple UN and IAEA reports that has a global consensus of radiologists and nuclear power experts state that the Soviets literally did overreact to the disaster, shutting down and resettling a lot more settlements then it was necessary, which ended up doing more damage through social factors than the radiation health hazards themselves did. But then again, if they hadn't overreacted, those very same isotopes could end up doing quite a bit more damage to people, and as >>16872087 pointed out, wider exclusion did benefit the environment and natural wildlife tremendously. >>16872087> but you wouldn't want to live there, drink the water, eat from a garden and hunt in the forest. True in the immediate exclusion zone around the plant in the years immediately following the disaster, but even one decade later the overwhelming majority of excluded territories are just straight up indistinguishable from the baseline in terms of radioactive isotope accumulation. There are still pockets where you definitely don't want to drink and eat the local biomass over an extended period of time, but they are extremely minuscule in scale, especially by now.
the fossil fuel industry, one of the wealthiest and most active propaganda producers on the plant, have a vested interest in demonizing alternative energy sources. A lot of effort has been put into making nuclear power look as scary as possible. Three Mile Island is known as the worst nuclear disaster in US history, yet NOBODY died, it was a nothing, but gets hyped up as a warning against the technology. Meanwhile, tens of thousands of US citizens died as a result of fossil fuels this year alone. Chernobyl is another victim of this dedicated propaganda campaign. It was bad, but is way overhyped as some apocalyptic catastrophe.
>>16872940
Woopsy, we made an 8th grade level mistake guys...we're very sorry. https://pmc.ncbi.nlm.nih.gov/articles/PMC4210929/https://pmc.ncbi.nlm.nih.gov/articles/PMC5541280/
>>16870674>the government can't be that incompetentgo work in a public sector job for a few years and then come see if you still stand behind this post. retard.
>>16870674You must not read the news
>>16865884Not the same poster, but also doing thisHuge changesMore hair, harder dick and better mood
>>16872560Yes I've noticed that, especially the mood.
This is just saying supplementation doesn’t work as good.
all the other tests are shit (outside of mensa), take this onehttps://openpsychometrics.org/tests/FSIQ/
>>16827884that's so cool
>>16871611that variance in your wmi and spatial must be autsim! or ADHD which is why you cant make discoveries! lmao
The curse of one word wrong...159 IQ
medical school turned out to be good choice even though I have shit memory. maybe I can be a surgeon.>A: 7/27ESL speaker.
>>16827884No way fag
Only if you formulate this problem in apple and banana
Depends on the type of the operator. Compact, normal and subnormal operators have been proven.
>>16872648Should have said complex Hilbert space. My bad
>>16872612yes
technically you should not be able to solve this, it is an open question even more the most gifted, 4chan isn't the place for solution to open questions that asidefinite-dimensional complext hilbert space dim>1, yesnonseparable hilbert space, yesmany operator classes on hilbert space yesif hilbert space is real, no in 2+ dims
why do particles behave differently when not observed?
>>16868549I think it's because observing devices like eyes or cameras absorb the wave aspect of the photon
If we live in a simulation then it could be a way to spare system resources with both unrendered geometry and foveated rendering.If you look directly at your screen in front of you everything is blurred around it. And you have no way of knowing if everything behind you is unrendered, just like in a video game.https://youtu.be/NPK8eQ4o8Pk
>>16871745This is actually a pretty good pointThat makes me wonder whether panpsychism has more merit than I thought NTA
>>16868549Wave particle duality is an example of the converse error fallacy: waves -> wave-like pattern => wave-like pattern -> waves. Physicists are that stupid.
>>16872760https://youtu.be/-JmNKGfFj7w
The definition of infinity is that it is how many natural numbers there are. If there are an infinite number of natural numbers, and an infinite number of fractions in between any two natural numbers, and an infinite number of fractions in between any two of those fractions, and an infinite number of fractions in between any two of those fractions, and an infinite number of fractions in between any two of those fractions, and… then that must mean that there are not only infinite infinities, but an infinite number of those infinities. and an infinite number of those infinities. and an infinite number of those infinities. and an infinite number of those infinities, and… (infinitely times. and that infinitely times. and that infinitely times. and that infinitely times. and that infinitely times. and…) continues forever. and that continues forever. and that continues forever. and that continues forever. and that continues forever. and…..(…)…
>>16872841>The definition of infinity is that it is how many natural numbers there are.No, that is the definition of aleph-0, infinite means endless.Those things you described aren't different infinities, they are just projections of the fact that numbers are endless in every direction possible.
