The technologies can be explicitly sci-fi-inspired, but obviously don't have to be. Add your own! Unrelated or trivial answers will be N/A'd.
All developed technologies resolve YES once they are in use (past the research phase) and technologies that don't exist resolve NO if/when we travel to the stars: aka when at least one person makes a transit attempt with a reasonable expectation of survival and success.
AI-developed tech counts, if the AI was originally made by humans. Presumptive alien-tech and alien-AI-tech don't count.
The close date is highly speculative and may be pushed back until interstellar travel happens or humans are gone.
@TheAllMemeingEye Er…Well honestly
I have no clue what I was thinking 5 months ago when I put this answer 🤣😅
@Stralor They might be referring to the firearm that was test-fired in 1974 by the Soviet Union. https://en.wikipedia.org/wiki/Salyut_3#On-board_gun
Fun fact: Microwave were first used to safely thaw frozen hamsters. Sadly it only works for things that are hamster size, not people size.
Source: https://en.m.wikipedia.org/wiki/Microwave_oven#:~:text=cryogenically%20frozen%20hamsters
To my knowledge, said space elevator materials would need properties so far beyond anything that we can even imagine let alone manufacture that it is basically impossible. So much harder than a generation ship or the like that I would consider it Clarktech. I would love to be proven wrong because they would be very useful besides the impossible tensile strength requirement of the primary structural member. Theoretically active supports (structural components that have properties beyond any static material but require constant power, usually by way of magnetic confinement of charged particles moving very fast where the forces only need to be fully manageable at the ends) could allow such a structure, but that is one of the most fail-deadly things I can imagine.
@dionisos I'm thinking something like Star Trek teleporters, but could be a variety of things. "Local" in this case means not interstellar
@Stralor But does this means real teleportation, ie faster than light ?
@dionisos wouldn't have to be. data transfer at light/sub-light would work for local level transport and teleportation would still be a significant advancement
@Stralor Ok, I assume it has to be almost at the speed of light, and that isn’t just disintegring something, sending the data, and then reconstructing it at another location, or if it is this, it has to be at least something the size/complexity of a human (otherwise we can already do that)
I am thinking of something like quantum teleportation but at a macro level.
(I feel somewhat silly arguing about resolution criteria from a market like that xD )
@dionisos we can already do that for smaller/ less complex objects? do you have a source? unless you mean strictly quantum particles, but this would have to be mass even if not living organisms, imo, otherwise it falls more under uses for communication (à la Ansible)
@Stralor I was thinking about the "teleportation" of quantum particles here.
Oh ok, so you mean the actual mass of the object have to be moved ?
@dionisos it could be recreated/ reformed at the destination. so quantum particles acting as the medium (whether that's data or otherwise) would be fine, but it needs to be dramatically upscaled to practical objects, and ideally humans
@Stralor Thanks. I’d like to put « Laser propulsion », but I can’t because it’s been more than 1 hour
We likely already live in a simulation.
If we further simulate a human mind in a computer, it can live for an arbitrarily long time, which might not be the case with minds in the current level of simulation - carbon dies quickly.
So, do emulated minds count? Assume they're fully indistinguishable from the wetware mind being emulated.