this post was submitted on 05 Sep 2025
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Whether big or small. We all have that one thing from Scifi we wished were real. I'd love to see a cool underground city with like a SkyDome or a space hotel for instance.

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[–] Dellpeanuts5@lemmy.dbzer0.com 6 points 2 days ago

Drone deliveries, food or mail. Its being trialed small scale but I want it everywhere.

[–] Cybersec@piefed.social 10 points 2 days ago

A caring society

[–] M137@lemmy.world -1 points 1 day ago

This whole thread is just Americans saying things that they don't have that is common elsewhere. And that isn't answering the question at all. It's the ever present thing of 'Murican idiocy thinking only about the US and acting like anything else doesn't exist.

[–] capuccino@lemmy.world 8 points 2 days ago* (last edited 2 days ago) (1 children)

Downloadable internet. You stick a pendrive in your PC with internet connection, fill it with internet and then go wherever you want, you have a usb router with data available to use and surf the net.

[–] jcr@jlai.lu 3 points 2 days ago

It is funny because that defeats the principle of the Internet as a shared, live, always on always available data space :-D

[–] Berttheduck@lemmy.ml 9 points 2 days ago* (last edited 2 days ago) (2 children)

Flying cars.

Asteroid mining.

Maybe a Moon or Mars colony.

End poverty.

Universal basic income/ post scarcity society.

Least to most fictional I think.

[–] TheLeadenSea@sh.itjust.works 10 points 2 days ago (2 children)

We have flying cars. They're called helicopters. And the limits to us having post scarcity are all societal/political, not technological.

[–] WindyRebel@lemmy.world 8 points 2 days ago (1 children)

The limit is skill and discipline.

Most people can’t even drive a car that is held on the ground by gravity. You want them to…fly?

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[–] Boddhisatva@lemmy.world 7 points 2 days ago (2 children)

Flying cars.

Not just no, hell no. I've driven in Tennessee.

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[–] Thrawn@lemmy.dbzer0.com 5 points 2 days ago (2 children)

Constructing an Orbital ring and then using that to get a form of space elevator built.

Totally possible to build with our current technology but the cost if we do it pre space elevator or similar is pretty insane.

Building a ring let's us basically have a stable space side anchor at low earth orbit instead of geo sync ish like you need for a normal space elevator to match ground speed.

Even more fun is cost for additional rings drops massively and you can build them in different orientations you can get space elevators to rings without having to be on the equator.

https://www.youtube.com/watch?v=LMbI6sk-62E

Last and my favorite part is the possibility of having literally trains that go up to a ring cross an ocean and go back down. Wouldn't be faster than planes but massively better cargo capacity and efficiency as well as comfortable for passengers.

[–] YiddishMcSquidish@lemmy.today 5 points 2 days ago (4 children)

From what I've seen about a space elevator, is that the we don't have the means to do it without creating a massive material shortage in the world.

The most plausible idea I've seen is using the centrifugal force of the earth spinning to keep a mass at LEO. But without a futuristic material like long carbon nanotubes, we would have essentially a ten mile thick metal cord tapering to something a few feet thick, and you would be limited in payload to like a few hundred pounds.

Just curious, why do you think a ring would predate the elevator?

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[–] scottmeme@sh.itjust.works 8 points 2 days ago

Cybernetics

[–] Almacca@aussie.zone 5 points 2 days ago

Free, unlimited energy.

[–] JoshuaFalken@lemmy.world 5 points 2 days ago
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