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https://sites.google.com/site/scienceandmathguide/
>>
Reminder: /sci/ is for discussing topics pertaining to science and mathematics, not for helping you with your homework or helping you figure out your career path.

If you want advice regarding college/university or your career path, go to /adv/ - Advice.

If you want help with your homework, go to /wsr/ - Worksafe Requests.

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Is reading Euclid's Elements worth it if you already have a good grasp of Euclidean geometry. Seems interesting regardless to me
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No, unless you really want to learn geometry or gain a massive appreciation for algebra.

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is pic related a credible iq test? are there any online tests that are worth it?
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>>10904363
the exact things Lynn cites as unreasonable for including in the data, like using elite samples and disregarding valid proxy for intelligence Wicherts does to boost the average iq of sub-saharan africans to ~80 when they should be much closer to 70. Its a very bad hit job that was done as a reaction to the results Lynn got. There is nothing valid about the review. One can't discount "malnourished" children when most people in the country are malnourished, one cannot include grammar school students in capital cities when they represent a tiny fraction of the population.
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>>10904494
>exact things Lynn cites as unreasonable for including in the data, like using elite samples and disregarding valid proxy for intelligence Wicherts does to boost the average iq
Lynn used in some cases the goodenough tests, which is a test that derives an IQ by having kids draw a stick figure and count how many "body parts" are present on it, that were performed over half a century ago on a very small sample, usually less than 100 kids, as indication of national IQ. At that point, using elite samples would be a singificantly better indication of national IQ since you could compare it to elite samples in other countries and estimate the average more efficiently.

Furthermore, as if the quality of the IQ studies he used wasn't bad enough, in 104 of the 185 countries, he didn't use any IQ tests whatsoever and just estimated the IQ based on GDP. In cases where GDP per capita did not match the IQ measured, such as in the case of China, he does some hand wavering and blames it on the fact that it is a communist country, as if China would have a higher GDP per capita than the US if they moved to a capitalist system.

The whole fucking study is shit and those who takes it seriously or even quotes are probably the only group with an average IQ 65.
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>>10904464
Did you do the spanish or pdf test? What was the raw score? Perhaps you didn't calculate your IQ properly.
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>>10904494
But isn't the point to find the innate iq of the race? If anything, shouldn't we be more interested in the performance of rested, fed, educated students than in malaria-addled famine children who are guaranteed to have a depressed average iq regardless of race?

>One can't discount "malnourished" children when most people in the country are malnourished
So rich countries get better iq scores because they are rich, then we use this data to show that those countries are wealthier because their people have higher iq? This reasoning is circular
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>>10904624
espanol test
the score was 53 out of 60

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Get Fucked: The Planet
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>>10902158
I think OP is characterising Venus as beligerent because it will not divulge any of its features to the prying eyes of astronomers and to humanity at large. OP's point is that a dull featureless white ball is not very interesting.
>>
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>>10903678
>>
What did this Fox News contributor and member of Trump's EPA transition team mean by this?
>>
From what I've heard there are altitudes where the atmosphere has similar conditions to Earth's surface. We could make floating cities there.
>>
>>10903678
sir I'm going to have to arrest you for a violation of the second law of thermodynamics.
>>10903698
>>the damn probe to the worst of venus.
and we want to do science on the surface
>>of course, nothing would last there longer than a few hours at best.
Again, the main issue is the electronics. Practically speaking silicon doesn't work as a semiconductor past 300 C. The Venera probes stopped function because the solder in their electronics melted, sure we could have used higher temp solder, but it wouldn't matter because the electronics would no longer function at these temperatures anyway. But now we have silicon carbide electronics. They aren't very good, but we can now make simple integrated circuits. The problem with them is the packaging and making them reliable. What we encase the chip in and what we use to make the chip connections. It took us a while to do this for regular silicon chips, it's taking us some time to do it for silicon carbide. It's not an insurmountable problem it just involves some engineering. It's not going that fast because applications of SiC electronics are pretty niche. Although there is a company claiming this problem is solved, so it might not be an issue anymore.
>>why we need to send a probe that stays at 50km to 55km
except that we want to do science on the surface not in the atmosphere. You can't get good seismometry data high in the atmosphere.

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>if and only if
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>WLOG
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>wherein
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>clearly

When will they invent quantum condoms?
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>>
good thread
>>
My dick is in more than one pussy at the same time, so this would be quite useful.

t. chad
>>
>>10903600
Wrong. Things only have purposes if we say they do, so sex has a purpose. For pleasure.
>>
>>10904533
>t. chad
thanks
>>10904595
sounds pretty stupid. playing Oblivion is much better
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>>10904605
For me, it's Morrowind. The best Bethesda game

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Previously - >>10880521
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>>10904369
I cope
>>
>reals aren't computable
>not only that, the reals that are computable have measure 0
this fact makes me existentially uncomfortable
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>>10904437
epic
>>10904378
gays are predisposed towards pedophilia, promiscuity, and psychosis
>>
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>>10904437
Pretty sure there's a good sense in which a subset of the reals having non-zero measure is quite a special occasion. So them having measure zero shouldn't Rob you sleep.

There's no strong understanding what subsets of infinite sets A are, as evidenced by the fact that you can force models where 2^A are.
E.g. it's consistent that there's intermediate sets |w0| < |w1| < 2^|w0| rejecting the continoum hypothesis, and then in L you have |w0| < |w1| = 2^|w0| but You CA. Also have |w0| < |w1| < |w2| = 2^|w0|.
Collections of subsets are up for grabs and we can't control them, so fuck it
>>
>>10904617

mainstream news edition https://youtu.be/A7N8DpB0HeQ

previous >>10892991
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>>10904573
It's not at all, how well do you think a Tesla is going to work at -60 to -80 degrees? My guess is not at all. Everything needs to be insulated and heated to fuck, cabins need to be pressurised and have CO2 scrubbers, spare oxygen, no rubber wheels since they would freeze and crack. A huge list of shit. A realistic Mars rover is going to look more like a minivan than a car, something similar to pic related is probably about what you can expect.
>>
>>10904597
>how well do you think a Tesla will work at -60°
https://www.autotrader.ca/cars/tesla/mb/winnipeg/
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>>10904602
Celcius not farenheit retard
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>>10904602
>Canada is as cold as Mars

Are you fucking stupid
>>
>>10904615
>winnipeg
>farenheit
also -60° F is -50°C

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Why do biologists define life by its actions (eat, reproduce, relation) and not by what it is?
>>
Nigga, have you ever even looked up the definition of life favored by biologists?

Literally number 1) Composed of cells
>>
>>10904575
function takes precedence over form when dealing with living systems, this is very hard for people who are not well versed in biology to understand. from this misunderstanding one gets machinic interpretations of biological structures where it is entirely inappropriate.
>>
>>10904598
Explain

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I have autism and I work as an engineer / researcher in the electrical power sector. After seeing some confusion since returing to /sci/ I thought I'd make a thread to answer questions about autism and electrical engineering in general. Also feel free to use this as a general on those topics, I'd be surprised if I'm the only one around.
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Can autists grow muscle if they want? I am not autistic, but can't grow muscles.
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>>10903303
>about autism and electrical engineering
Why did you say autism twice ?
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>>10904481
HFA here i'd say you are correct
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/thread
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>>10903303
Why is autism research so fucked? It's like oscillating between retards to concentration camps to genius that leads silicon valley.

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>skin colour
different
>eye colour
different
>hair colour
different
>hair texture
different
>skull shape
different
>susceptibility/resistance to various maladies
different
>brain shape
different
>intelligence
exactly the same

What did they mean by this?
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>>10902928
That the reason the human brain is so great is because it's one of the most plastic brains in existence, with less structural heritability than any other species. This then allows it to learn according to environment much better.
https://www.pnas.org/content/112/48/14799
>>
>>10902935
What's something we don't know about it?
>>
>>10902928
>susceptibility/resistance to various maladies
Vastly variable within all races

>skin colour
Somewhat variable within all races

>eye colour
Somewhat variable among blacks, vastly variable among whites, middle easterners and south asians

>hair colour
Vastly variable among whites and among middle easterners

>hair texture
Vastly variable among whites and among middle easterners

>skull shape
Vastly variable among blacks (even though many are dolychocepalic, I'm not sure if they are the absolute majority, since they aren't nearly as much studied as white people) and among whites.

>brain shape

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>>10904443
low iq post
>>
>>10904443

>susceptibility/resistance to various maladies is vastly variable within all races

Bitch, we can't even drink the water on the opposite end of the earth without boiling it to prevent us from shutting ourselves to death.

People literally evolved a fucked up blood cell shape that has a significant chance of causing sickle cell anemia due to the presence of malaria.

Stupid questions thread, formerly >>10860247
Latex in the sticky, recs in the wiki.
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How do I not forget stuff? Ask me right now what the order axioms for the real numbers are, I couldn't tell you. No fucking clue.

I did linear algebra last year, and I remember very little of it. Almost nothing at all.

Calculus as well, I took last year. I remember more of it, but stuff like proofs I've basically forgotten. E.g. I couldn't prove the FTC to you if you asked me, yet at some point I knew how to.

I don't remember what the Cauchy-Schwartz inequality says, I just remember it's a thing.

I forget like 70% of the stuff I read, or at least the specifics of it. Often I'll get the vague "Oh this reminds me of something" and then I look it up and I'm fine, but I can't do that on exams obviously, and it's still frustrating.
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>>10904175
Eat better, sleep 8 hours every night, and exercise. Drink plenty of water
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>>10904211
It's really only a math problem though. I have no problem remembering other things.
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>>10904248

you don't think about it often enough
>>
Frens, how many higher math classes do I have to take before there are few women enrolled?

So with all this talk about global warming and incoming apocalypse, why hasnt there been any mention of biodomes and dome cities, or even underground cities?

How is the geography of middle east, and why aren't they pioneering underground cities? This was such a meme in the 90s that there waseven a meme movie about it, which I almost posted a pic of for the OP

It might have been far fetched before but there has to have been big strides in material science by now
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>>10903972
>making more greenhouses to fight the greenhouse affect.
Fight fire with fire I guess.
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>>10903972
I'm still salty no one's doing anything with cloud seeding or tidal electricity generation, or even more Nuclear stuff.
>>
because it's a fad. nothing will be done anyways.
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>>10904483
Not necessarily the goal, but if we must accept that the planet will become a doomed desert, why are no plans to build a society that can live in such a climate?

Do people think we will go to mars and not live in habitats?
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>>10904535
I hope we don't have a fyre festival mars edition

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wow.. this really makes you think
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>>10903069
lol faggot
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>>10903069
typical highschool math student right here.
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>>10903089
The idea is that the most important, beautiful, or even most common numbers in mathematics appear in this one equation: e, i, pi, 1, and 0.
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>>10902942
What level of math do you need to know for this to make sense anyways?
>>
>>10904563
>faggot
Why the homophobia?

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Anyone here work at Sillicon Valley
Post your experience there


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