Anybody here actually believes this guy is going to deliver? This mars project is destined to failure.
The colony is a failure no matter how you look at it, not only the logistics of a project like are far too complicated for a private company to accomplish but the fact that the trip to mars is 6 months. now if you understand how space works you should know that the amount of radiation the colonizer would be exposed to is insane thx to the way our magnetic field works.
Now you add the way zero gravity+ lower gravity than normal affects the human body it would reduce the life span of those colonizer by a shit ton. its a failure of project because humanity does not have the technology to take on a project of this magnitude.
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>>8624317
>actually believing the marketing
spacex will make lots of money when the ISS is deorbited and England, Canada, Australia, France, Germany etc want their own space stations and probes. Mars isn't a goal for at least fifty years.
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bump for interest
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>>8624317
Your rambling post says very little and contains numerous factual errors about transit time and radiation levels. Please go read up on what is actually planned instead of spreading falsehoods.
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Is anyone on /sci/ exceptionally smart?Or know someone who is.
Not your regular smart but the kind of smart where you just are blown away by their intelligence.You just know they are on a different level by just talking to them.
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yes, I know a few people.
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>>8624161
elaborate
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>>8624157
Probably not the answer you are looking for my, but I've seen that it's virtually impossible to lie or hide anything from my big brother. He always senses all kinds of things.
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The laws of nature have diversified and grown more complex as time has progressed since the big bang, right? Is the idea ever taken seriously that the physical laws that we observe are actually dynamically changing? I've been curious about this for a while. Unfortunately I am not in cahoots with many physicists.
Could there be a differential equation describing the evolution of the universe's physical properties themselves? Perhaps things such as the free energy principle are emergent qualities from some self-reference on the level of the dynamics of physical laws.
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>>8624155
That's a pretty good question. Looking at old objects (objects very far) we see similar structures to the object near us, in other words, the first galaxies seem to obey the same principles as ours. So, it's good hypothesis that the laws of physics havent changed in all that time.
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>The laws of nature have diversified and grown more complex as time has progressed since the big bang, right?
Not sure if that's sensible. I'd take the standpoint that there are only phenomena and models*, but even if you're a realist about an (essentially probably unattainable) "real" laws of the universe, and they could be put in math, then you would have a variation of some of it's constituents (e.g. in time) just a feature of the laws. Why do you think that a notion of "dynamically changing" would be external to a law. The "differential equation describing the evolution of the universe's physical properties" would be the physical law.
*You must realize that if, just for example, our world is better described via non-commutative function algebras, as e.g. in
https://en.wikipedia.org/wiki/Noncommutative_quantum_field_theory
than coordinate functions (coordinate rings) and space and spacetime as to be modeled via a set of point equipped with something like a spacetime metric, and force fields F(x) a functions of space and space time, is merely a coarse grain notion. And as soon as we were able to handly a more complicated notion of space better, we'd again find that it's also inaccurate and so the trowing away of notions continues. There is no good notion of mass, for example, on the QFT level, only effective blobs that eventually stem from come coefficients in some representation of some Lagrangian densities...
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>>8624192
That's good stuff but I think OPs question had sense.
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sup /sci/ do you have any cool sceince related ideas lately, if so what ?
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>>8624116
i made a volcano using vinegar and baking soda
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what would happen if you put a pellet of uranium reactor fuel in the large hadron collider beam?
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>>8624692
What if we like use reactor to power a beam to make neutrons, that way we can use a subcritical amounts of uranium. With this we have 0% chance of a melt down
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What would the universe look like if orbital hybridization wasn't possible?
Would planets form? If so, what compounds would they be made of?
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>>8623952
>implying hybridization occurs in elements with Z>10
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>>8623980
What about icy planets or gaseous ones and what would the hydrocarbon lakes on Titan be made of?
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>>8624003
It would all be helium
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Hi /sci/, litfag here.
I was thinking that it'd be cool to get a telescope.
Is it really worthy and what kind of stuff can you see with a home telescope?
Also, can you recomend a nice telescope arround 100?
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>>8623877
you can use it to stretch your anus.
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>>8623882
nice
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>>8623877
Well this depends largely on where you live. If you're in a city or near a city you'll see far less due to light pollution. If you live in a more remote area go for it.
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Which field has it the worst when it comes to pseudoscience or non-scientist conspiracy theorists? Physics with the electric universe theory and flat earth? Biology with the evolution deniers and anti-vaxers? Engineers and 9/11 conspiracies? Is any field safe? How do we fix this?
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>>8623804
homeopathia
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Quantum woo is by far the worst
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>>8623804
>How do we fix this?
Make it illegal and punishable by fines and jail time for repeat offenders to have any opinions about a topic without having a degree in that topic. So if you are an uninform layman then at best what you can do is agree with people who have degrees, but you cannot legally start discussions on your own or share your opinions.
As easy as that. We may need to start regulating the internet for this. We would need to ask discussion boards like 4chan to add a verified feature like twitter and to get verified you would need to send your personal information to the admins so they can confirm you have a degree in, say, physics. Then you can make threads about theories about the universe.
Then unverified people can post in your thread and say "I agree" or "I don't agree" but if someone unverified goes out to share their theory then they will be given a ban of 24 hours. However, another verified person may come to your thread to share his contrary opinion.
Any person banned like this will also have their IP sent to the NSA to see if they can track you and punish you by giving you a fine or jailtime as explained before. And also any site who does not comply with this regulation will be banned off the internet. Like if a discussion website fails to set new rules and enforce them then they will be the ones who get fines and jailtime.
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Daily reminder that the fine tuned argument makes fedoras and intelectual fedoras extremelly butthurt because it treathens their marxist religion.
Daily reminder that Occam razor proves that the easiest evidence is that the universe was designed meanwhile there's 0 physical evidence beyond mathematical BS to multiuniverses.
I was an atheist before I started to look on the fined tuned argument and the more I look on it, the more it indicates there's is a God.
Elite fedoras have to concede the fine tuned argument, but their solutions are simply pseudoscience.
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>>8623760
Fine tuning is just scientists saying "if we weren't here to observe we'd have no way of observing!" And then getting themselves into a metaphysical tizzy because people cant help but find connections or meaning where none exists
But its nice you've gleaned something different anon, though my theory is that you haven't really understood what physicists say when they mean we live in a finely tuned universe
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occams razor doesnt prove shit.
Show the proof then
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>>8623760
>I was an atheist before I started to look on the fined tuned argument and the more I look on it, the more it indicates there's is a God.
Your metaphysics are shit.
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What does /sci/ think of Issac Arthur?
Does what he say check out?
https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g
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>>8623665
it was carl sagan who said tha. cant you read ?
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>>8623718
I'm talking about Issac Arthur's videos.
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>>8623743
and i made a joke. sorry dont rly have an opinion about the guy his videos are too long or lame to me.
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>post traumatic slave syndrome
>thought it was satire
>it's real, and the woman who coined the term has a PhD
What. I want off this wild ride.
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cool
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>post-holocaust trauma genetic transfer
>thought it was satire
>it's real, and the woman who coined the term has a PhD
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>>8623298
Do you not trust Jews??
Racist..
Anonymous
Upper level Math Questions thread 2017-01-23 06:43:51 Post No.8623099
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Upper level Math Questions thread 2017-01-23 06:43:51 Post No.8623099
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Upper level Math Questions thread
Anonymous
2017-01-23 06:43:51
Post No. 8623099
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For a nice enough scheme, [math]X \to \operatorname{Spec} \mathbb{C}[/math], [math]{\operatorname{Coh} \left( X \right)}[/math] has a nice stacky structure.
Can this stacky structure be "lifted" to the cochain category [math]{\operatorname{Ch} ^ \bullet }\left( {\operatorname{Coh} \left( X \right)} \right)[/math]?
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whats the formula for alll that
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Heres one 6+9-21x44+17+2=?
Just fucking with you /sci/ feel free to answer it anyway if you're bored lol
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>>8623131
-890
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how big is the universe?
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About 30 times larger than the observable universe.
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>>8623034
Okay, well, see, if I had a tube, right? And if I were to fit the universe inside the tube, okay, well what I like to tell my students is, well I don't have any students any more, see, I retired, well actually I got fired, sorry for lying, umm, what was I, oh yeah, the tube, well, it would have to be a pretty big tube, roughly twice the length of the universe.
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>>8623034
As big as size.
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Any plant fags here? I'm growing lemon trees and one of my seedlings leaves have white discoloration on them. Is it mold or fungus? Can it survive it?
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get a 4700K CFL and a clamp lamp so that it gets more light
dont overwater etc
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>>8622722
see
>>>/out/927684
Looks like sun scalding, fyi. Did it receive a lot of sun one day when it had been indoors or in ambient light for a long time?
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>>8622722
The class I took in genetics pays off again.
Boo ya https://en.wikipedia.org/wiki/Position-effect_variegation
It could be this.
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How do you (scientifically) avoid falling into an existential crisis?
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Get a testosterone transfusion and realize that it doesn't matter that it doesn't matter because there's shit to do.
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Science *causes* existential crises.
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>>8621668
I agreeish
I think the phrase is "man up"
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So I recently found out that my mother has been purchasing "essential oils" over the Internet from a company called "Doterra." I did some basic research on this company, and apparently it's run by Mormons, and is a pyramid scheme, or "Multi-level marketing" scam.
She buys them over the Internet, directly from their website, so I went there. How fucking quickly I realized what a scam this is. Tiny fucking 5mL bottles go from $20 to as much as $50 per bottle. She is spending thousands of dollars on this bullshit scam. They are just plant oils, there's nothing "essential" about them, and the "essential" refers to their essence, or scent / aroma, not that they are essential for life or anything like that, incredibly deceptive to dumb soccer moms who buy this crap.
Apparently, they advertise this crap, which is simply concentrated plant oils sold at 5000%+ markups, as being able to cure a wide variety of ailments, and dumb moms get suckered into buying them under false pretenses that they cure disease, like other alternative medicine crap. It's not surprising, considering the only evidence that people that use this crap have to go off of is testimonials from other dupees, rather than actual scientific literature.
How do I go about convincing someone that believes in this garbage to be skeptical, and see it from a scientific perspective? I don't want to be aggressive with her, because I know she will get all defensive since she is a scientific illiterate.
So, /sci/, how do you change the mind of a close-minded "alternative medicine" moron? What is the best way to approach this so that she doesn't burn through my dad's retirement with this garbage?
http://www.lazymanandmoney.com/doterra-essential-oils-scam/
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ignorance is bliss
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>>8621644
True, and if there wasn't a massive monetary cost to this crap, I wouldn't care and let her have the placebo from them, but I can't stand by and let her support something that is essentially a pyramid scheme with little to no basis in scientific literature.
I'm just afraid that because I often call her out on supporting pseudo-science crap like "healing crystals" for example, that she won't listen to anything I have to say due to her confirmation bias.
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We know you're right. the problem is with the way you approach the topic. nobody like to be called a retard. fake interest in her product. listen to her. then introduce cheaper alternative. show her pop sci vids of your new product. I would try vitamins. they are cheap and lots of people shilling for them. also, pirate some book on the topic and make your own essential oils. she might even make some herself if you show her how easy it is. Nobody like wasting money, make her understand that money could be spend elsewhere.
good luck anon