Why is there almost never more than one intelligent species on a planet in Scifi.

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thepopeofatheism

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It's rare enough that [i/]one[/i] intelligent species would develop in a hundred [i/]solar systems[/i].

Let alone multiple on a single planet.
 

mesoforte

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Jan 5, 2010
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A prerequisite of being an 'intelligent' species is killing off all possible competitors.

If one species is unable to destroy the other, you get two.
 

manaman

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Tarkand said:
Star Wars is really closer to fantasy in space than it is Sci-Fi tho.

The condition for intelligent life to appear in the first place on a given planet are pretty low to begin with, so having 2 of them on the same planet... and not have them destroy each other before they get out of the bronze age is extremely unlikely...
Wrong on the first count right on the second.

There where multiple intelligent species and sub species of humans on this very planet. We wiped out and bread out of existence all others - excluding the ones that died out on their own.

Intelligence is pretty damn important to scavenging species, and high levels of intelligence can be found in some surprising places here on earth. Not human intelligence mind you, but that maybe more a product of our social upbring then you want to believe. Look up wild children. Basically a child that is not in a social environment growing up never develops the language skills, and the complex problem solving skills... and basically most only function around the level of a 5 year old kid.
 

BlindMessiah94

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Nov 12, 2009
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Most writers are lazy. It's far easier to create one race than thousands like we have on earth.
Also on a side note why do scientists assume all life needs water and oxygen? Just because we do here on earth doesn't mean there isn't some being out in the universe that breathes in sulfur and breathes out rainbows and dies at the mere mention of water.

Right?
 

Uberjoe19

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Jan 25, 2009
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BlindMessiah94 said:
Most writers are lazy. It's far easier to create one race than thousands like we have on earth.
Also on a side note why do scientists assume all life needs water and oxygen? Just because we do here on earth doesn't mean there isn't some being out in the universe that breathes in sulfur and breathes out rainbows and dies at the mere mention of water.

Right?
The fact is that hundreds of compounds dissolve in water, which is why it is necessary for life. Every single chemical reaction in our bodies uses water as a medium.
 

Uberjoe19

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Khitten said:
Because the more intelligent a species gets the stupider they become. Look at humans for example. We will happily slaughter our own kind for even the slightest difference, even just being born on the wrong side of some imaginary line. Not to mention we then break it down further into cities, families and even just ourselves. In the end people are happy to hurt others and even the planet itself just to gain some quick temporary gain.
We're the only species that will kill its own kind for no particular reason. And then we also kill for abstract concepts such as "God" and "freedom".
 

Jandau

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Dec 19, 2008
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recharge330 said:
By that I mean native to that planet. I just realized I never hear about multiple intelligent species developing on a single planet in any Scifi universe.
Well, we kinda had that on Earth long ago (Neanderthals), didn't really work out (for them, that is).

It's fairly safe to assume that one of the two species will exterminate the other early on, so unless both species develop as natural pacifists, not much chance of them both surviving. Also, even if two species do survive, it's fairly likely that they might be genetically close enough for crossbreeding of some sort in which case they mix or one gets absorbed into the other (alternate theory for Neanderthals).

And finally, it HAS been done in Sci Fi. In Star Trek, and I'm fairly sure I've seen in in Stargate. Likely other examples as well...
 

tkioz

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May 7, 2009
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recharge330 said:
By that I mean native to that planet. I just realized I never hear about multiple intelligent species developing on a single planet in any Scifi universe.
The same reason there is only one human race, not humans and the other near human races that were around at the same time as us at one stage, we killed the bastards off. Unless the divide takes place after language and society is invented by the race, chances are one race will have murdered the crap out of the other race.

Babylon 5 did have two races evolve on one world, they fought for most of their history until one race (the Centarui) finally genocided the other race into the history books.

Of course of a world the size of earth assuming two a number of super continents (twice the size of say Australia) separated by large oceans it might be possible, but again chances one race would kill the other for resources, or simply enslave them, just look at how humans have acted to other humans with slightly different skin tones!
 

tkioz

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May 7, 2009
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philosophicalbastard said:
Tarkand said:
Star Wars is really closer to fantasy in space than it is Sci-Fi tho.

The condition for intelligent life to appear in the first place on a given planet are pretty low to begin with, so having 2 of them on the same planet... and not have them destroy each other before they get out of the bronze age is extremely unlikely.

Both species would compete for the same ressource. It's from my understanding that Homo Sapion (us) and Cro-Magnon (Cave Man) existed during the same time period, but the Sapien basically wiped them out (direct conflict or simply ressource denial)... and those are both 'man'...

So in short, it doesn't happen because science doesn't support it... Sci-Fi tries to stick to scientific explanation (loosely).
Have you considered the two species being separated by the geography of the planet, like two continents on either side of the world seperated by water? Because, unless a large amount of either species travels to the other continent they should be able to develop in peace.
Unless they evolve their society and technology at roughly the same pace (highly unlikely, tech leaps happen by chance and need) one race will simply dominate the "primitives" look at what happened on Earth.
 

tkioz

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May 7, 2009
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BlindMessiah94 said:
Most writers are lazy. It's far easier to create one race than thousands like we have on earth.
Also on a side note why do scientists assume all life needs water and oxygen? Just because we do here on earth doesn't mean there isn't some being out in the universe that breathes in sulfur and breathes out rainbows and dies at the mere mention of water.

Right?
We have to write off what we know, we've never met another alien race, all we've got to go on is some loose guesses, sure there might be Aliens out there shaped like squids that eat rocks and shit flowers, and given the size of the universe there probably is, was, or will be at some point, but the second part of Sci-Fi is Fiction, and fiction works best when you write what you know and can relate too.
 

BlindMessiah94

The 94th Blind Messiah
Nov 12, 2009
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Uberjoe19 said:
BlindMessiah94 said:
Most writers are lazy. It's far easier to create one race than thousands like we have on earth.
Also on a side note why do scientists assume all life needs water and oxygen? Just because we do here on earth doesn't mean there isn't some being out in the universe that breathes in sulfur and breathes out rainbows and dies at the mere mention of water.

Right?
The fact is that hundreds of compounds dissolve in water, which is why it is necessary for life. Every single chemical reaction in our bodies uses water as a medium.
Yes but if you read what I wrote the point I'm getting at is that just because that's what it takes for life here on Earth to happen, that doesn't mean some other planet without water couldn't have life - it just might abide by different rules than life here.
 

Lim3

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Feb 15, 2010
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Tarkand said:
Star Wars is really closer to fantasy in space than it is Sci-Fi tho.

The condition for intelligent life to appear in the first place on a given planet are pretty low to begin with, so having 2 of them on the same planet... and not have them destroy each other before they get out of the bronze age is extremely unlikely.

Both species would compete for the same ressource. It's from my understanding that Homo Sapion (us) and Cro-Magnon (Cave Man) existed during the same time period, but the Sapien basically wiped them out (direct conflict or simply ressource denial)... and those are both 'man'...

So in short, it doesn't happen because science doesn't support it... Sci-Fi tries to stick to scientific explanation (loosely).
I took that away from Xmen 2 as well XD
 

Regiment

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It's easier for writers and viewers to keep track of it. It's for the same reasons that most sci- fi planets have basically one government, one religion, one climate, and one city. When you have the whole of space to work with, it's more interesting to put everything different on other planets.
 

MiserableOldGit

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Babylon 5 -the centaris were born on a planet that had two species-they wiped the other out in a war-which gives you a clue as to why it doesn't happen too often...
 

Woodsey

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Well, I guess there's always one species that needs to be overtly dominant.

What I want to know is why every other sci-fi planet has only one type of environment. You'll get a desert planet, a water planet, a jungle planet, etc. etc.
 

rewood4

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It's probably because any intelligent species would kill off all threats, including other intelligent species (ie look at the neanderthals).