Why does science tell us that alcohol is terrible for you and that even a drop of alcohol can be harmful? If this was the case, why are people who go out and party regularly getting drunk not dying at early ages? Why do countries that have a long time pub culture not experience major endemics relating to alcohol consumption? I do hear of people who die from heavy alcohol consumption at an early age, but it's very rare. Alcohol is so regularly drunk and so prevalent, yet I rarely hear of people who have chronic issues with it. Everyone in school and college would drink. I almost never drink and actually work out regularly even to this day, yet I don't really see how I'm any healthier than them.
>>16901326>why are people who go out and party regularly getting drunk not dying at early ages?They are.>Why do countries that have a long time pub culture not experience major endemics relating to alcohol consumption?They do.Alcohol is a harmful substance. That doesn't mean it WILL kill you automatically like taking mercury or arsenic. But it does have a clear trend of negatively affecting health. What matters the most is also HOW you drink. Binge drinking is far worse than regular moderate consumption even if the overall amount is lower in the long term. Denmark and Finland consistently rank worse than the other Nordic countries in life expectancy, and it's largely because of alcoholism.
>>16901326The prevalence lies within. Social drinking is as; drunken alcoholism is not.
>I fasten my seatbelt but i don't see how it made me any more secure than the guy who doesn't but is yet to get in a car accidentbig if true
>>16902408Health science is mostly fake and false. Drinking isn't good for you chemically but it helps you have good times and good times make you more healthy, look at how old people die from despair and how loneliness makes your cortisol rise. Only heavy drinking by yourself is probably bad.
>>16903394Alcoholism is a failure to drink responsibly.
is there a formula for figuring out how large and hot a sphere needs to be to warm a room up to a certain temperature?say i have a standard room of 4x4x3 meters and want it to be 20 degrees celsius want to test it with extreme valueslike how small should the sphere be if it had a temperature of 500k?
>>16903537500 keV
You would need the value for the heat capacity of the material. You also need to know what temperature you are starting at.
>>16903528>want to test it with extreme valuesTheories and mathematical equations usually come apart at extreme values because some normally negligible effects suddenly have a more significant influence.And like the other anons said, you need to define a material. Although at very high temperatures you usually deal with some sort of plasma.
>>16903528surface of sphere = 4 * pi * R^2Stefan Boltzman law: M = alpha * T^4where alfa is the stefan boltzman constant and M is watts per square meter
>>16903528Depending on the material, size and temperature you will know how much energy you can store in that sphere.Depending on the amount of energy required to maintain the temperature constant at the desired level you can have an idea of how big it should be.
Recently found out that many recyclables are just dumped in general landfill anyway. Those which aren't are usually made into some second grade material which immediately goes back out into the environment and can not be recycled again.Meanwhile we have three different trucks bumping up our street on different days to collect general waste and the recyclables, spewing out diesel fumes everywhere. Then I look at the mind blowing amount of rubbish that countries like India and China just burn, bury, or dump into the rivers which are carried out into the world's oceans.And I think what the fuck is the point of this? Given absolute power I would just simply tax the ever loving fuck out of all unnecessary packaging, plastics, and crap, so people would only buy those products as a last resort. Or just ban it full stop.Anyway I recently got a black mark from the council becasue some lowlife put a recyclable plastic drink bottle in my general waste wheelie bin. Two more black marks and I get a fine. Great, now I have to put out my wheelie bin at the last possible minute before the truck comes. Look, fuck this bullshit. Separating and having to put out three different bins on three different days is a pain. I didn't mind doing it but now I just cant be fucked. I waste my precious time while Chang and Pajeet carelessly dump a thousand million times more crap into the oceans every day. I thought about my black mark and concluded that the council must occasionally inspect the contents of my bins. Well fuck. Lets see, minimum wage council workers doing a filthy job will only do the bare minimum and only pick out the cleanest and easiest errors. Okay, so now I put ALL my plastics, glass, paper, and cans into the bottom of the general waste rubbish bags ( which are plastic, lol ). Then I urinate in it and add cat's poo. Tie it off and into the bin it goes to ferment until collection. Can't see those council workers wanting to sort through that. Fuck it all.
[eqn] x_{1} [\eqn] hi
>>16897702>council workers issuing black markssounds like a money harvesting operation. perhaps they are the ones planting recyclables into your general waste in order to collect additional funds and hire more third worlders who hate you with a burning fire. something like that. yeah, it's all a scam at any rate
>>16897702Chang's IQ is too high to fall for such scams
>>16903299Possibly. But also just as likely some well meaning but retarded teenager was walking by and thought he would do the "right thing" by putting the litter in a bin. What bothers me is you can't fight the black mark. Its there for ever and never gets removed. Now I understand why my neighbors always put out their bins at the last minute and why they immediately run out like trained dogs to retrieve them once the truck has gone. Just another pointless humiliation ritual.Okay, well now they are getting my humiliation payback.>it's all a scam at any rateYeah. But with most scams you have to buy into it, with this you have no choice. ( Other than going homeless or innawoods. )
>>16902154
How strong really is the science around the theory that the universe is deterministic?Like what is the percentage likelihood that it's true based on the strength of the evidence?
>>16903864>n-n-n-no U!!!!Sorry, but you're a retarded biobot who doesn't know what he's talking about, but also does not (and in fact cannot) know that he doesn't know.
>>16899957>Like what is the percentage likelihood that it's true based on the strength of the evidence?It's impossible to prove one way or the other.No matter how deterministic something looks, you can't prove it was not just the result of chance.No matter how random something looks, you can't prove it there was no hidden mechanical cause.
>>16903947>No matter how deterministic something looksNo system looks deterministic in real life. Not in any objective terms.>No matter how random something looks, you can't prove it there was no hidden mechanical cause.Ok, but this unfalsifiable Determinism of the Gaps fantasy has no intersection with scientific thinking.
>>16904057>No system looks deterministic in real life.Considering before Heisenberg physics was very close to develop a 100% deterministic description of the universe, I'd rather say the opposite.>Ok, but this unfalsifiableSo is the alternative.
>>16904068>considering [completely irrelevant and incongruent tangent]You didn't even dispute what I wrote, let alone actually refuting it.
Are we really on the verge of permanently missing out on being a space civilization? As far as I understand we're at a critical point where we need to conserve resources like oil, coal and copper, and use most of them to try and establish a Lunar mining base, so we can use the Helium-3 in regolith as nuclear fuel to power the whole Earth.Of course, this all goes to hell if we start a nuclear conflict and resources get funneled into war.From my understanding, this could effectively turn out to be our second "late bronze age collapse" type event, but on a global scale rather than centered around the eastern mediterranean like in antiquity. Just like how the ancient Greeks lost writing for 400 years, we might lose modern electronics and machinery, except this time permanently.>miss the timing to exploit space while we still have some resources here on earth leftit's over>nuclear war shakes humanity back 400 years and we no longer have easy access to oil and coal for a new industrial revolutionit's overCan humanity really continue developing our technology if we do NOT manage to extract resources from Luna by the 2050s? Will easily accessible ores and fuels "run out", and have us regress back to a pre-industrial state? Assuming we can keep recycling current existing material. If not, we might be screwed, as early humans presumably gathered all the easily available surface-level copper and tin, modern humans took even the less accessible resources, and (in a few decades) we'll have burned all our oil and coal... we might not even reach the bronze age again.
>>16903942>like adults.>>16903942>digital vr paradisehttps://youtu.be/LhI2gq8S_O0You must first explain how moon walks were possible then and impossible now...how did NASA lose technology like the pyramid builders of Ages ago?Every post WAS about space...but you rejected the mirror's horror.>>16903858>the same terrestrial hell you are trying to escape from...Escape from Earth is escape from the reality is escape from the self...personal hells seeking personal Jesuses and rejecting both and ensuring only one.
>>16903942>paradise>hyper-sexualized infantile gooner loops and drug fuels dissolutionshttps://youtu.be/qBc27S8Xw_MI know where this ends...its elementary, Mrs.Watson.
>>16903839>as I understand we're at a critical point where we need to conserve resources like oil, coal and copper,Why? Copper is recyclable. Oil and coal are abundant and can be synthesized.>He3I might care when an working He3 fusion generator exists.>second "late bronze age collapse"You have watched too much pop science history channel. Electricity is not going to be unlearned.
>>16903839>spacehttps://www.datacenterdynamics.com/en/news/elon-musk-says-spacex-will-be-doing-data-centers-in-space/Beware the goon kid...for he will fuck anything for lust, or greed, or sport...
>>16903942>then we all upload our minds as ai, kill ourselvesI struggle to see how someone can be this stupid. Especially uploading to a server that you don't own and have admin control over. Your file will get a few moments of cpu time, be stored and then deleted.
Just how fake and gay is evolution?
>>16905395The entire point though is that it's a bad analogy. Many of the points you listed (bro I'm not going point-to-point in a dying thread) ARE still contentious for many reasons, the study is relatively new, and there are tons of gaps in the science as-is. Even your explanations on Pig vs Peccary is ridiculous and goes back to the original point about the Hyena's are cats because of a single ear-bone. ALL of it boils down to the fact that the premise of the picture IS to prove that the distinguishing point of evolution (the theory that rather than tiny details changing over time, there is a huge chain) still leaves a lot to be desired.Silly.
>>16905397>Many of the points you listed ARE still contentious for many reasonsName literally one. None of those are contentious. Literally not a single zoologist thinks hyenas are closer to dogs or whatever>bro I'm not going point-to-point in a dying threadIf you can’t address them then just say so>Even your explanations on Pig vs Peccary is ridiculous and goes back to the original point about the Hyena's are cats because of a single ear-boneAsserting that it’s ridiculous doesn’t make it true. Please explain how these aren’t diagnostic features, demonstrate your expertise you fucking pseud. You don’t know the first thing about this and are trying to speak like you know shit>ALL of it boils down to the fact that the premise of the picture IS to prove that the distinguishing point of evolutionWhat does this even mean? I don’t get how you’re still get struggling to understand the point of why he posted that image
>>16905397>Hyena's are catsNobody said this. Learn the terms before trying to argue about them, it just makes you look retarded
>>16894964We have bacteria which can survive radiation and vaacum, as well as extremely high temperatures but not quite autoclave. But you can't adapt to total annihilation, imagine if you nuked humans at ground zero, even if you could theoretically have an organism which survived nuclear blasts, nobody could adapt all the way in a single mutation and nobody would survive the nukes even partially. Antibiotics are just a bacterial toxin, they work on basic biological rules and thus they're easy to adapt to.
Gaaaaay, but not fake.
Suppose there was a number between 0.999... and 1 such that 0.999...<x≤1. Then subtracting 1 from each side results in 0≤1-x<1/10^(∞). But since 1/10^(∞)=0 there couldn't be a number 1-x between 0 and 1/10^(∞). Therefore there is no number between 0.999... and 1 such that 0.999...<x≤1. Since 0.999... is greater than or equal to every element from 0 to 1, and since 1 is greater than or equal to every element in this same interval, then 0.999...=1. ??????????????
>>16903490You have 2 * a = b, with b = 0.9... Write the dth decimal digit of a or b as a(d) or b(d).Decimal digits are integers so 2 * a(d) must be even, meaning that b(d - 1) odd implies a(d) >= 5 and b(d - 1) even implies a(d) < 5. In this case, b(d - 1) is even for d = 1 and odd for d > 0 so a(d) < 5 for d = 1 and >= 5 for d > 1. Now if b(d) = 9, then a(d) can be either 4 or 9. Plug that into the lemma and you get a(1) = 4 and a(d) = 9 for d > 1.
>>16903621in english, schizo
>>16903651Essays and other degenerate nonproofs go in /lit/ along with your poetry about the Planck constants :)
>>16902863>>16903015The whole point of 0.333... was to represent 1/3 as a decimal. If you don't get 1 back when you multiply it by 3, then what was the point of 0.333... in the first place? This makes it clear to the layman that 0.999... needs to equal 1 for the math to make sense. Of course this is not good enough for the mathematician, who wants to verify that the math does make sense. A good way to do this is to pick a definition for what infinite decimals mean and verify that it does the things we expect, including making 0.333... = 1/3 and 0.999... = 1. See >>16903084 for one way of fleshing this out.
>>169037651/3 = 3/10 + 1/30= 0.3 + 1/30= 0.33 + 1/300= 0.333 + 1/3000:= 0.333... + 1/inf= 0.333... + 0= 0.333...
What biological magic do we need to harness to regrow limbs. Newts and crabs can do it. I know we aren’t newts and crabs but we’re smart.A human embryo grows limbs from nothing. Why can that happen only once? Why does skin heal but fingers can’t grow back?
>>16899435I guess crabs needed the ability to regrow limbs because they get their limbs cut often and if not they don't survive. Humans don't need them because that is not so often.
your own limb, probably not but we can grow an genetically neutral limb and attach it to stub, not sure about the neurology, the thing is if your body is x years old, thats how long it takes to grow your own limb, if you lost a limb at 30, you are not going to wait 30+30 to get your limb backin the future you will just be given a pre-grown limb from a limb generator that grows body parts for amputees, this makes sense
>>16899552So they will take your DNA, grow a limb in a lamb and then stitch it to you? Seems plausible because right now you can stitch fingers if they are not dead and the body reconnects to them.
@_@
Bioelectric fields
currently I'm a math student. I was wondering, how math excercises are designed for books? generally speaking. I get that excercises start easy and gradually increase difficulty but difficulty can get out of hand quickly. How does /sci/ create their excercises to teach math?How to design math excercises that gradually increase difficulty?How to make sure an excercise does not get to complex for writing on the board when teaching?When writing the firs excercise of a set, sohuld I begin with the most basic and simple excercise or should I get the most complex and strip it down to more easier excercises?
>>16903254Making exercices is hard, or at least, tedious work. Most of them are transmitted by tradition
It's 2026 so most textbook writers grew up with books of integrals, literal textbooks of just integrals, and they pick ones they like or otherwise find enjoyable along with a few difficult ones for the end of the section. Exercises are generally designed to cover all use cases for a specific section/thought/concept, and the latter questions are the most difficult and niche cases to deter students from just mindlessly doing them all without thinking.What I'm saying is, go look at an old fashioned Tables Of Integrals textbook. It's just 200+ pages of solved integrals, without solutions but with proven solutions somewhere. Then start solving them. If you solve them all you can then assemble any math course up to Calc II based on your own knowledge and your question will be answered.This is enormously difficult and is what the putnam questions are based on. Many professors have had their entire careers just doing this.
>>16903254This is very very difficult task. And if you google "mathematical problem posing", you'll just get mathematics pedagogy nonsense. But like everything, either you steal it from someone else or you come up with something yourself.
>>16903254As others have said, most of these questions have been lifted from prior works over the course of literal centuries.If you want to make something new, you could try starting with the solution and run the inverse operations of what you intend your students to be using until you have some expression you might expect to have to evaluate in school.
>>16903254>Think about various statements which are known to be true and weren't proved in class>Think about various statements which can be proved using what was covered in class>Think of examples>Think of interesting examples>Think of counterexamples>Think of examples which might involve certain key techniques>Think of examples where there is a straightforward, but long and tedious approach, and an alternative elegant and quick approach which requires some thoughtUsually when I'm writing notes, these kinds of things will all come to me, and then I have a plethora of exercises I can assign.
>'Toxic effects of Thing on subject'>"We conclude Thing is Toxic">'Benefits of Thing on subject'>"We conclude Thing is Beneficial">'Effects of Thing on subject'>"We conclude Effects of Thing are important, but more studies are needed"Why is every single article on modern science a loaded question? Is it bad form to negate your hypothesis?
>>16902806>Is it bad form to negate your hypothesis?Ideally no. But kinda.Null hypotheses don't often get published unless they're surprising in some way. Boring results that don't prove anything aren't gonna get cited much so they go in the bin.
>>16903047>Don't get publishedWhy is science ruled by this publishing economy bullshit? You're pushing lies if all you do is relabel a collection of biased studies, What's the point then?
>>16902806None of those are questions
>>16903110>Why is science ruled by this publishing economy bullshit?Making your results public IS publishing whether it's in an established scientific journal or some schizo's blog. The distinction is how seriously people are going to take it.The alternative is achieving practical results which is more of an industry thing.
are they good?
>>16900949Are they cheap?If so, read them. If you don't like them: Toss themOther than that, maybe stick to the classic recommendationsBon voyager! Et je veux une baguette aux fromage
>>16900949Non
>>16900949>>16903730To a foreigner, these look like mass produced Schaum’s Outlines. Why are your exams so rigid that they’ve forced the entire curriculum into such a standardized, formulaic mold?Wtf is "l'agrégation de mathématiques"?
was Ramanujan created by G.H. Hardy as a fraud? or was he a real human being?
>>16902803>was he a real human beingIf he was real...then show me his body.
>>16902803he invented the o-rings that killing the challenger?
>>16902803Srinivasa isn't even a real name. It must all have been a fraud.
>>16902803
>>16903532Looks like the type of thing where someone just computed some Fourier series, Laurent series, or some other variant, and just plugged in [math] \pi [/math]. In other words, he was probably just a hack who spammed formulas to deceive people into thinking he was smart. An excellent strategy for harvesting Izzat. But it's unbecoming for a mathematician.
>>16891802Both empiricism and rationalism are retarded safety blanket ideas asserting the "sum of all conceivable truths".
Seems kinda trivial to me
Why hair split
>>16891802Lul
>>16891860This. Only retards wouldn't understand that this is just fundamentally true. If you can't agree on what you're discussing, you're not having a discussion, you're casting spells at each other.
My explanation for the Fermi paradox is that all alien civilizations collapse just like the West is collapsing
And we all know the reason
>>16897999There is no paradox. Non-human technology is currently being developed/reverse-engineered in secret by the US government. The witness testimony in front of Congress, alongside increasing Congressional interest, show that something is happening here. IMO, it's time to shake the proverbial UFO tech tree to see what falls out and revitalize the economy/win wars.
>>16897999that's one possibility. and if we don't destroy our selves, we might find ancient ruins of alien civilizations out there
>>16897999Dumb frog poster
>>16897999Maybe by the time a civilization advances enough to colonize the stars, heir society has such a profound ecological understanding that they no longer desire to.
have you ever audited a class? what was the experience like? any tips for someone wanting to do the same?
>>16901279We have very limited time on this earth. Even without auditing an extra class, most people have enough on their plate. Don’t be an idiot. Do the work. Most people don’t do the work. If you have ADHD and the like, take your medication.
>>16901295i'm not sure what you mean by do the work. i am not interested in enrolling fully in college. it is expensive and i do not have a need for the degree. i looked through their course catalof and saw one (1) class i would be interested in.
>>16901279No, but I know people who have.>any tipsEmail the lecturer, or ask him in person if it's okay for you to sit in the class. Unless he's an absolute cunt, he'll be absolutely happy for you to.Then just go to the classes.
>>16901279I think I agree with the sentiment of >>16901295I audited a course once, but I just stopped going after a few weeks because I had too much other stuff to do, or even if I could've attended I figured I ought to spend that time on research or other work. If you think you actually have the time to attend the lectures then just enroll in the course (unless you are unable to for whatever reason, but in this case "auditing" is just a formality).
