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aint that funny how we paint future in such a dark colors (since sun will die in 5 billion years) and assume we all gonna die with it at the end, but yet we don't put humans evolution taken into consideration. "in 600 million years plants will die" -- seriously now? look when we have been 1,000 or even 100 years ago. think when we will be in next 1,000, given nuclear war will not push us back to the stone age. otherwise, in 600 million years we as humans will be able to scan entire universe and find perfect new home and teleport ourselves all plants and everything out there. think this is sci-fi? go back in time to 1900 and tell someone in 100 years you will have a palm size device of grapefruit weight that can gather information literally from air, play sounds, show motion picture, and you can interact with it by touching its colorful screen.


We've done things that seem like magic to some hunter-gatherer; that doesn't imply everything that seems like magic to us will come true. (does anyone have a catchy name for this fallacy?)

The boundary between things we know to be possible and impossible is in fact stronger now, because (for most of the events in this timeline) we're now basing this knowledge on the laws of physics.

Sidebar: future events that derive solely from thermodynamics don't really have a get-out-of-jail card; deflecting some of the others would require us to meaningfully harness much larger amounts of energy at the scholar system scale, bootstrapping that sort of thing would require multiple jumps of a few orders of magnitude which might be solvable as an engineering problem, but is economically dicey when we're already squandering the fossil fuel dividend on our current, unsustainable needs. That is to say, please solve politics or economics before dreaming of magitech.


Based on what we believe the laws of physics to be, which isn't yet a fully settled question.


Sure. Quite possibly we'll just see refinements at the edges of what we have access to (because at most scales, physics is already very accurate) rather than outright revolutions.


We still know almost nothing about 80% of the matter in the visible universe. Ordinary matter is less than 5%. Physics has some explaining to do.

http://en.wikipedia.org/wiki/Dark_matter

http://en.wikipedia.org/wiki/Dark_energy


We are certain of one, not the other.




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