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Stephen Hawkings & AliensFollow

#27 Apr 28 2010 at 3:23 PM Rating: Excellent
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They'll probably show up looking for their leader, MonxDot.

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#28 Apr 28 2010 at 3:36 PM Rating: Decent
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Kavekk the Ludicrous wrote:
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If aliens come to Earth, it wont be for our resources. They can get everything they need on any of millions of other planets without pesky creatures bothering their mining operations, or forcing them to expend resources to wipe us out before they can begin. With all due respect to Hawking's, that's just kinda dumb. If they come here it'll be specifically to interact with us. Now, that could certainly be a Columbus moment for us (with us as the natives), but it wont be because we happen to be sitting on a pile of resources they want to exploit.


It didn't strike you that he might be talking about the resources of our biosphere as opposed to minerals?


Of course. It also occurred to me (since I watched the show), that for every planet with a biosphere capable of supporting intelligent life, maybe one in a billion will. So, that's a whole lot of planets with all the same potential resources for an advanced alien race to exploit without having to deal with folks like us. You'd had to go well out of your way to deliberately seek out a planet with the needed resources that also had an intelligent tool-using species on it.

Hence, why it was such a silly assumption. If they come here, it's because we're here, not because we happen to be inhabiting a planet who's resources they want to exploit. Doubly so given the proposed method of getting here Hawking's proposed on the show.
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#29 Apr 28 2010 at 3:42 PM Rating: Decent
gbaji wrote:
Kavekk the Ludicrous wrote:
Quote:
If aliens come to Earth, it wont be for our resources. They can get everything they need on any of millions of other planets without pesky creatures bothering their mining operations, or forcing them to expend resources to wipe us out before they can begin. With all due respect to Hawking's, that's just kinda dumb. If they come here it'll be specifically to interact with us. Now, that could certainly be a Columbus moment for us (with us as the natives), but it wont be because we happen to be sitting on a pile of resources they want to exploit.


It didn't strike you that he might be talking about the resources of our biosphere as opposed to minerals?


Of course. It also occurred to me (since I watched the show), that for every planet with a biosphere capable of supporting intelligent life, maybe one in a billion will. So, that's a whole lot of planets with all the same potential resources for an advanced alien race to exploit without having to deal with folks like us. You'd had to go well out of your way to deliberately seek out a planet with the needed resources that also had an intelligent tool-using species on it.

Hence, why it was such a silly assumption. If they come here, it's because we're here, not because we happen to be inhabiting a planet who's resources they want to exploit. Doubly so given the proposed method of getting here Hawking's proposed on the show.


Gbaji talks sense. Still, it's not hard to imagine several reasons why his logic might fail.

* Earth the closest planet with suitable resources
* WE are the resource
* They just happen to be in the neighborhood

Ok, so the last one is silly, but think about it for a while, and I'm sure you can come up with more. Improbable does not make impossible, however unlikely it may be.
#30 Apr 28 2010 at 3:53 PM Rating: Good
gbaji wrote:
Kavekk the Ludicrous wrote:
Quote:
If aliens come to Earth, it wont be for our resources. They can get everything they need on any of millions of other planets without pesky creatures bothering their mining operations, or forcing them to expend resources to wipe us out before they can begin. With all due respect to Hawking's, that's just kinda dumb. If they come here it'll be specifically to interact with us. Now, that could certainly be a Columbus moment for us (with us as the natives), but it wont be because we happen to be sitting on a pile of resources they want to exploit.


It didn't strike you that he might be talking about the resources of our biosphere as opposed to minerals?


Of course. It also occurred to me (since I watched the show), that for every planet with a biosphere capable of supporting intelligent life, maybe one in a billion will. So, that's a whole lot of planets with all the same potential resources for an advanced alien race to exploit without having to deal with folks like us. You'd had to go well out of your way to deliberately seek out a planet with the needed resources that also had an intelligent tool-using species on it.

Hence, why it was such a silly assumption. If they come here, it's because we're here, not because we happen to be inhabiting a planet who's resources they want to exploit. Doubly so given the proposed method of getting here Hawking's proposed on the show.


That sounds like an amazingly large assumption to me. The programme took it as read, did it?

I mean, we're postulating FTL capable civilisations here. The unihabited ones could already be colonised, thus supporting intelligent life even if they did not give rise to it, even if giving rise to intelligent life is so rare. The main assumption, though, is that human-level intelligent species wipe themselves out fairly quickly (on a cosmic scale) as, given the massive advantage human level or greater intelligence is, few other things could do the job, especially if we're assuming FTL drives are possible and aliens might discover them (this level of tech would allow them to easily avoid extinction at t hands of cosmic hazards like asteroids).

Edited, Apr 28th 2010 9:58pm by Kavekk
#31 Apr 28 2010 at 4:30 PM Rating: Good
We are far more likely to get transmissions from ETs then actual visits.

Let's say there were 10 advanced civilizations in the galaxy "before" us. Now our galaxy is about 100,000 light years in size, so let's say the closest one was about 10,000 light years away. They could have sent us a message in radio waves with a very modest energy cost.

Or they could accelerate a vehicle to near the speed of light. A modest estimate of the mass of the vehicle could be one ton (1000 kg) and the kinetic energy of going near light speed would be 1x10^(19) joules. This is roughly the total energy output of all human activity for 18 days on Earth. It is an unimaginably amount of energy. So as not to squish the hell out of everything on board, let us say we accelerate the vehicle at 1 g (meaning, it accelerates as one would fall, near Earth's surface although oddly during the acceleration they would feel exactly as we do on Earth under gravity without falling). It would take on the order of one Earth year to deliver that energy. At the end of that year, the vehicle would be about 10^(15) meters away - about 10,000 times farther then the Earth is from the Sun. And that is assuming no fuel is stored on-board. If it is, the situation gets far more ridiculous since the initial mass will be enormous.

Oh ya, and then it would take 10,000 years to get here*, with little to no ability to steer and no ability to slow down at the other end, aside from expending the same quantity of energy again - which is a totally insane amount of energy.

*actually it takes this long for us as it comes - for the vehicle it would be somewhat less, about half as I recall, for numbers like I have indicated above. Expending vastly more energy can reduce the time as the vehicle (and anyone on board) experiences it, but will not reduce the time in our frame.
#32 Apr 28 2010 at 4:35 PM Rating: Good
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yossarian wrote:
What if Aliens were actually already here, but disguised as Donald Trump?

Srs Bznss!

Mindless speculation FTW!
Yeah
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#33 Apr 28 2010 at 4:52 PM Rating: Decent
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Belkira the Tulip wrote:
This may be a stupid question, but why is it unthinkable that aliens would visit in our lifetime (given that you accept that aliens might exist at all)?

Because of time honestly. Intelligent alien life almost certainly has, does, or will exist, but assuming that this has any relevancy to use within the last thousand or next thousand years is silly.

Current estimates put the universe at around 12 billion years old. Those might be wrong, but all that really matters is that it is a relatively huge number. Hack off about 4 billion years for the universe to settle down a bit and things to get cooking. Even then, the idea that any local alien civilizations are within our level of advancement (either above or below us) by less than 100,000 years is silly. They're either a billion years behind us or a billion years ahead of us. Completely throwing out any technological limitations on reaching us, then they've had this capability for tens of millions of years; if they had any intentions of interacting with us they would have done so one million years ago or aren't planning on doing anything for another million years.

Some might try to argue that it is only recently that we've become advanced, and therefore they'd "totally like, care about us now." That reeks of arrogance. Pretending that anything that has happened within the last thousands years is more significant from an alien (literally and figuratively) perspective is most significant than the interval of a thousand years before that or the next thousands years is putting the present on a pedestal.

To bet that aliens are relevant to you or me is planning the lottery on an order of magnitude greater more than 100 times that of any state lotto.

Edited, Apr 28th 2010 5:52pm by Allegory
#34 Apr 28 2010 at 5:00 PM Rating: Good
Allegory wrote:
Completely throwing out any technological limitations on reaching us, then they've had this capability for tens of millions of years; if they had any intentions of interacting with us they would have done so one million years ago or aren't planning on doing anything for another million years.


Here's where things get interesting. Any sufficiently technically advanced race might be just as advanced, socially speaking, and it is entirely possible that such an advanced race might adopt something akin to - yep, you guessed it - the prime directive. The prime directive dictates that there can be no interference with the internal development of pre-warpFTL civilizations. It's a bit silly, yeah, but then, not so much. If we're going to speculate in one direction, why is it any more harmful to speculate in the other?

Edited, Apr 28th 2010 6:01pm by BrownDuck
#35 Apr 28 2010 at 5:06 PM Rating: Decent
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BrownDuck wrote:
If we're going to speculate in one direction, why is it any more harmful to speculate in the other?

You do realize you just reworded what I said to include a Star Trek reference right? The meaning is still the same, albeit less astute sounding.
#36 Apr 28 2010 at 5:12 PM Rating: Decent
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This is will probably be the only time I ever type the following words: I agree with gbaji.
#37 Apr 28 2010 at 5:14 PM Rating: Decent
Allegory wrote:
BrownDuck wrote:
If we're going to speculate in one direction, why is it any more harmful to speculate in the other?

You do realize you just reworded what I said to include a Star Trek reference right?


Not unless you mean to say that you're fairly certain it'll be another million+ years until we have knowledge to develop FTL travel. My statement was intended to counter your assertion that there was zero interest in interacting with us. Instead, it could be merely that we haven't met some cosmological pre-condition.
#38 Apr 28 2010 at 5:22 PM Rating: Decent
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Turin the Malevolent wrote:
This is will probably be the only time I ever type the following words: I agree with gbaji.

You know, I'm now making a habit of of checking every user who has made this joke for duplication, because I hear it so often it has to have been said twice by the same person once.

Also, you're off the hook... for now.
BrownDuck wrote:
My statement was intended to counter your assertion that there was zero interest in interacting with us.

It might be a better idea to counter things I have said rather than things I have not said, although I do admit it'd be pretty cool if I happen to finally say that thing and then you're all "Gotcha!"

I never said they had zero interest in interacting with us. I said they have zero interest in interacting with use in any sort of relevant time frame. "if they had any intentions of interacting with us they would have done so one million years ago or aren't planning on doing anything for another million years." Whether this is because we haven't met some weird alien prime directive condition or because the space Republicans are running a million year long filibuster stopping laws to allow contact with other species doesn't matter. The point is that the period of time that is relevant to us is small and the period of time the event could occur is enormous.
#39 Apr 28 2010 at 5:59 PM Rating: Decent
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Kavekk the Ludicrous wrote:
Quote:
If aliens come to Earth, it wont be for our resources. They can get everything they need on any of millions of other planets without pesky creatures bothering their mining operations, or forcing them to expend resources to wipe us out before they can begin. With all due respect to Hawking's, that's just kinda dumb. If they come here it'll be specifically to interact with us. Now, that could certainly be a Columbus moment for us (with us as the natives), but it wont be because we happen to be sitting on a pile of resources they want to exploit.


It didn't strike you that he might be talking about the resources of our biosphere as opposed to minerals?

Maybe they'll come to us looking for plastic. Didn't know how to make it, wanted some for themselves.

Why are we here?
Plastic, aSShole.
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#40 Apr 28 2010 at 6:35 PM Rating: Decent
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BrownDuck wrote:
Gbaji talks sense. Still, it's not hard to imagine several reasons why his logic might fail.

* Earth the closest planet with suitable resources


I covered this with my redundantly redundant final sentence. The proposed method for FTL was that after the space nomads finished collecting all the usable resources in a star system, they would construct a Dyson sphere (as originally designed, not as commonly portrayed in sci-fi), collect energy from the star itself, and use that massive energy source to open up a wormhole to the next star system to repeat the process.

If we assume they don't jump blindly into other star systems, this method somewhat requires that they send probes for great distances around them in space to find a suitable next system to scavenge for resources. Hence, they would not "bump" into us accidentally and proximity may not be a very significant factor. Depending on how long it would take for them to collect a major portion of the resources of an entire star system (potentially centuries), and assuming that their wormhole/jump method allows them a reasonable choice of potential systems to go to (10s of light years at least), the odds of there being no other system with suitable resources for them except ours seems incredibly unlikely.

Quote:
* WE are the resource


A possibility I included. I said that if they choose to come here, it would almost certainly be because we are here, not because we happen to be sitting on some resources they want. So yeah. If they come here for us, they came here for us...


Quote:
* They just happen to be in the neighborhood


This is identical to your first point. If you'd watched the show you'd have seen that Hawking's proposed scenario made absolutely no sense. There would be no reason for such a species to choose to come to our system. Assuming it is just about physical resources and ignoring any ethical considerations at all, it would make more sense to pick an uninhabited star system. The proposed method of travel does not allow for us just happening to be along a path they're traveling, and there's no way our presence could make their operations more efficient, so why go here?

Quote:
Ok, so the last one is silly, but think about it for a while, and I'm sure you can come up with more. Improbable does not make impossible, however unlikely it may be.


Oh. I can come up with lots of reasons why an advanced alien species might come to visit us, either for beneficial or harmful ends. But the one that Hawking was talking about isn't one of them. It was just jarring to me because there are so many more rational explanations for why this might happen that his just seemed to have been incredibly poorly thought out.

Edited, Apr 28th 2010 5:37pm by gbaji
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#41 Apr 28 2010 at 6:40 PM Rating: Good
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Lord Nobby wrote:
yossarian wrote:
What if Aliens were actually already here, but disguised as Donald Trump?

Srs Bznss!

Mindless speculation FTW!
Yeah


I see through your little charade, alien.
#42 Apr 28 2010 at 8:28 PM Rating: Good
Debalic wrote:
Why are we here?
Plastic aSShole.


I initially read this without the comma, and it was far more amusing.
#43 Apr 28 2010 at 8:46 PM Rating: Decent
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Dammit. I am now firmly invested in reading all of the Ringworld-related articles on Wikipedia spawned from gbaji's mention of the Dyson sphere. I guess I should eventually read the series; maybe after I (eventually) finish Dune.
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we all know liberals are well adjusted american citizens who only want what's best for society. While conservatives are evil money grubbing scum who only want to sh*t on the little man and rob the world of its resources.
#44 Apr 28 2010 at 9:04 PM Rating: Decent
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Debalic wrote:
Dammit. I am now firmly invested in reading all of the Ringworld-related articles on Wikipedia spawned from gbaji's mention of the Dyson sphere. I guess I should eventually read the series; maybe after I (eventually) finish Dune.


Funny thing is that I started re-reading the Ringworld Novels recently as well. Good stuff!
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#45 Apr 28 2010 at 11:54 PM Rating: Good
Gbaji wrote:
If we assume they don't jump blindly into other star systems, this method somewhat requires that they send probes for great distances around them in space to find a suitable next system to scavenge for resources.


Not necessarily. We all ready have the ability to detect the presence of planets outside of our solar system. Granted, it's a lot easier to do so for larger planets (where life "as we know it" would be harder to arise), but in the last year alone the number of "known" planets has increased 25%. It isn't hard to assume then, that an FTL capable civilization has vastly more powerful sensory equipment that is not only able to find "earth like" planets, but earth like planets within the proper distance to support liquid water with an atmosphere that is "out of chemical equilibrium" (because under most conditions a planet's atmosphere will be in chemical equilibrium. "Life" throws it out of equilibrium.

Link: http://web.mit.edu/newsoffice/2009/3q-seager.html

Dr. Seagar, MIT Planetary Scientist wrote:
Mostly we want to take a spectrum and look at features caused by gas molecules in a planet’s atmosphere. A planetary atmosphere that is completely out of chemical equilibrium is indicative of life, because under most conditions a planet’s atmosphere will be in chemical equilibrium. Earth's atmosphere is composed of 21 percent oxygen by volume due to plants and photosynthetic bacteria. Oxygen is such a reactive gas that it shouldn't be in our atmosphere at all. Oxygen is a key gas we hope to find on exoplanets.

We are already learning so much about hot giant exoplanets. We have learned about bizarre planetary orbits and planets that are too large to be explained. We have learned about huge day-night temperature differences. We have identified molecules on exoplanets. We have learned about the vertical temperature structure of atmospheres. The same kinds of things can be learned about Earth-like planets when they are detected in the future.


And if intelligent life doesn't need the conditions we know are needed to support our carbon based forms, then life could be a whole lot more common.

Gbaji wrote:
I said that if they choose to come here, it would almost certainly be because we are here, not because we happen to be sitting on some resources they want. So yeah. If they come here for us, they came here for us...


I disagree. We're not going to be able to offer much resistance to an FTL capable race, so our existence here might not factor in to their thoughts at all. Since it stands to reason, again, that any FTL capable races would have vastly more powerful sensory equipment than anything we can imagine, then unless "life" is the resource (Think something akin to "The Collectors" in Mass Effect) they could come here for any resource they wanted. They could be benevolent, which would be swell, but evolution kind of dictates "survival of the fittest", which we wouldn't be to an FTL capable race.

Gbaji wrote:
There would be no reason for such a species to choose to come to our system. Assuming it is just about physical resources and ignoring any ethical considerations at all, it would make more sense to pick an uninhabited star system. The proposed method of travel does not allow for us just happening to be along a path they're traveling, and there's no way our presence could make their operations more efficient, so why go here?


They detect water, need it, warp here, & take it. Sure, the "liberal" aliens might ***** about wiping out all life on a planet to get the water, but if they need it bad enough (or it's worth enough space rupees) they'll just take it. Clarke's third law, "Any sufficiently advanced technology is indistinguishable from magic", pretty much guarantees a win for a FTL capable race with the sensory technology needed to "see" that there's water here.

Gbaji wrote:
Oh. I can come up with lots of reasons why an advanced alien species might come to visit us, either for beneficial or harmful ends. But the one that Hawking was talking about isn't one of them. It was just jarring to me because there are so many more rational explanations for why this might happen that his just seemed to have been incredibly poorly thought out.


You can disagree with Hawkings, pretty much "the" expert this planet has on the universe, if you choose too. But to call his reasoning "poorly thought out" is a new low even for you, considering the genius does pretty much nothing BUT think about these things all day every day, given his "handicap".


Edited, Apr 29th 2010 1:55am by Omegavegeta
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#46 Apr 29 2010 at 3:47 AM Rating: Decent
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Even in the unlikely event that alien life does come to out planet I quote War of the worlds

Quote:
By the toll of a billion deaths man has bought his birthright of the earth, and it is his against all comers; it would still be his were the Martians ten times as mighty as they are. For neither do men live nor die in vain.
#47 Apr 30 2010 at 10:59 AM Rating: Default
For all we know. Alien's have been visiting here for ten's of thousands of years already. From evidence we have they have influenced cultures and our develepoment already. Who knows? We might be just an experiement for them. Or perhaps a convient spot to grow spair parts for them?
#48 Apr 30 2010 at 11:19 AM Rating: Decent
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There are some who claim that aliens have been watching us, perhaps for signs of our own progress towards FTL and atomics. Which would explain why many sightings and encounters have happened at or near military installations - they're concerned about our development of nuclear weapons.
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we all know liberals are well adjusted american citizens who only want what's best for society. While conservatives are evil money grubbing scum who only want to sh*t on the little man and rob the world of its resources.
#49 Apr 30 2010 at 11:28 AM Rating: Good
Debalic wrote:
There are some who claim that aliens have been watching us, perhaps for signs of our own progress towards FTL and atomics. Which would explain why many sightings and encounters have happened at or near military installations - they're concerned about our development of nuclear weapons.


Relatively speaking, the human race is not very advanced. We've made great strides in the past ~100 years, but we're still cosmological noobs. Even still, man has wondered since the dawn of civilization whether there is someone else out there. We spend billions of dollars in research for the sole purpose of understanding our universe and the potential for intelligent life elsewhere. Why? Sheer intellectual curiosity.

I don't think its too far fetched to suppose any sufficiently advanced alien race might be watching us as you describe for no other reason than because we exist.
#50 Apr 30 2010 at 11:37 AM Rating: Good
Debalic wrote:
There are some who claim that aliens have been watching us, perhaps for signs of our own progress towards FTL and atomics. Which would explain why many sightings and encounters have happened at or near military installations - they're concerned about our development of nuclear weapons.

How does that explain cattle mutilations & **** probes way, way off the military bases?
#51 Apr 30 2010 at 12:10 PM Rating: Good
His Excellency MoebiusLord wrote:
Debalic wrote:
There are some who claim that aliens have been watching us, perhaps for signs of our own progress towards FTL and atomics. Which would explain why many sightings and encounters have happened at or near military installations - they're concerned about our development of nuclear weapons.

How does that explain cattle mutilations & **** probes way, way off the military bases?


Aliens can't work all the time, man. They need to relax, too.
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