Avatar (film)/Headscratchers/Earth: Difference between revisions

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** I think the arguement being made is, why is exploitiong everything in our path intrinsically bad if it is actually more sustainable longer than living in a biosphere? And for that matter why is living in "balance" with the natural environment good if it is not necessary for survival? What makes covering the planet in cities and efficiently exploiting every source of energy and materials a bad thing? It seems like the answer that they are giving us is, because machines and human buildings are ugly. Or that we should be nice to and animals and trees just because we should. Well I live in a rural area and frankly I disagree.

*** Because there's more to life than just 'survival'? Living in a biosphere and moderating your consumption of resources means infinite sustainability (at least until the stars around turn into supernovas). There isn't a direct reason that's available to explain why Earth's a crap sack world, but it's highly suggested that the population of humans on Earth are unhappy with scrambling around in their squalid filth all the time. If they're unhappy, then something's wrong.

*** "biosphere and moderating your consumption of resources means infinite sustainability", bunk. The land living portion of the biosphere can only survive another 450 million years at most until solar immittance increases to the point that C4 photosynthesis is impossible, not to mention the likelyhood of at least one globally catastrophic bolide impact during that time. Given the technology of this setting the humans could live in space until red dwarfs begin to burn out more than 100 billion years in the future. [[Screw the Rules I Have Money|Screw the biosphere we've got space habitats arranged in a dyson swarm.]]

*** "biosphere and moderating your consumption of resources means infinite sustainability", bunk. The land living portion of the biosphere can only survive another 450 million years at most until solar immittance increases to the point that C4 photosynthesis is impossible, not to mention the likelyhood of at least one globally catastrophic bolide impact during that time. Given the technology of this setting the humans could live in space until red dwarfs begin to burn out more than 100 billion years in the future. [[Screw the Rules, I Have Money|Screw the biosphere we've got space habitats arranged in a dyson swarm.]]

*** Still haven't explained why the human population in the movie agree that Earth is a [[Crapsack World]].

**** 450 million years? Where did you get that number? Temperature does not depend only on the Sun. Atmosphere is just as important. And how do you know it was not an asteroid impact what destroyed the biosphere?