Seems entirely reasonable that a Gattaca future is achievable. Whether desirable is the other question. Somewhere CJ Cherryh is being worshipped as a prophet.
Artificial wombs are something that's often presented as dystopian, but I would imagine would actually be a very good thing. Beyond the obvious help it would be to infertile couples that desired children, they would if commonly adopted eliminate the danger of birth and pregnancy complications, and discomfort associated with the process. Probably not everyone would want to use it, but I'd bet even having the option would mean a lot to a lot of people.
The real downside to artificial wombs is that we may rapidly become dependent on them. Half of pregnancies result in spontaneous abortion. With external gestation that assumedly wouldn't happen. That's a hell of a lot of evolutionary pressure which could have all kinds of consequences.
Artificial stem cells seem like the next thing to really revolutionize medicine.
Quantum computers for brute force hacks seems doable in 100.
Eye tracking pointer devices will likely be more convenient than mice within a dozen or two years. This will probably be widely available for people who are paralyzed first.
Diamond processors are always 10 years away, but I think we can do it in 100. This would revolutionize the amount of power we can put through a chip without worrying about cooling.
Quick charge capacitor replacements for standard rechargble batteries
Low yield fusion plants. I'd like to think of them as capable of high yield, but it's much harder than initially thought. Some ideas are quite promising for low yield.
I feel like the bottleneck will be with smooth continuous motions. It's very easy to move a cursor in that way with a mouse but you can't do that motion with your eyes unless you are looking at something else that's moving.
I suspect we will see a human brain to digital interface. I don't think it will be "downloading minds" or anything, but I could see someone finding a way to plug a specialized camera or mic in to have a full functioning robotic replacement part.
I'm pretty sure they already have the beginning pieces to this, but its too specialized and expensive to do anything commercial with it yet.
This is so terrifying to me. I feel like it'll end up like the Black Mirror episode with the subscription model, getting more and more expensive with fewer features.
Cochlear implants are a form of this, and are already commercial. I remember having a conversation with a guy at a doof about 10 years ago, standing right near a loud sound system, and it took me 20 minutes to realise he had one. He was completely deaf without it on.. I can only assume the tech is much better these days.
Similar things exist for vision (though maybe not yet commercial?).
Tricorders, cellphones are already partway there they just need more durable, small sensors like a handheld light spectrometer to tell what things are made of and a handheld interferometer to detect gravity
Check out the app Phyphox, it uses all your existing sensors and probably surpasses tricorders in several ways while, of course, lacking in a few others.
They are down to 2 main problems now. The main one is (the cost of) scaling up. Fusion reactors will be more effective then bigger they are. The tiny test ones are already past break even.
The other is wall material. Apparently the radiation has an annoying ability to transmute the elements making up the wall of the reactor. They are working out a material that can maintain its bulk mechanical properties, even with random elements appearing in its internal structure.
The only one I heard news about breaking even was that thing that shot a lot of lasers to a pellet. For a fraction of a second It broke even or produced slightly more than they poured in, but it was much less of what they spent.
I saw a talk on the subject about a year back. It was discussing tokamak reactors, from an engineer working on them. The small ones can't sustain a break even state, but they are affected by the inverse square law to a larger degree. I believe China is about to start/has started construction on a power station sized test reactor.
The pellet sort are a different type. They have different pros and cons.
Direct brain interfaces for, like, VR. So instead of a screen strapped to your face, your visual cortex is just stimulated so you see the game using your own "hardware." A literal Matrix type environment for your mind.
This is either gonna be cool and fun, or scary and evil. But it will exist.
I don't think we'll be able to upload knowledge any time soon, as we're a long way from properly mapping how the brain handles this.
But visual inputs for VR/AR is much closer, as there is already some functional implants for something similar: having cameras produce neural stimuli has been a thing for a few decades now, and it's now at the stage where some blind people have been able to regain a limited form of vision despite not having functioning eyes. The tech is only going to get better, so at some point it can be used to augment normal vision.
they had an ai generate images based off thoughts or dreams or something, I imagine its further ahead now too lazy to look for more articles https://www.nbcnews.com/news/amp/rcna76096
Exceeding FTL (and breaking causality) is basically a sci fi trope at this point with about as much credibility as psychics. To have at least some credibility you need one of: a testable hypothesis, or an unexplained phenomenon. Right now we have neither. At best, we have some equations, that work below light speed, where we can extrapolate past light speed and see how the math works. The problem is: none of these equations are testable as they all contain infinities or other asymptotic features that prevent passing light speed itself. So, if there's no viable math to get from sublight to FTL, and there's no unexplained phenomena, then what we're left with is nothing.
Even quantum entanglement, which is a darling of sci fi whenever they need a plot device (hello Le Guin and the ansible), has categorically been shown to obey causality and the light speed limit in every lab test.
At some point it's like asking for negative mass, antigravity, or other things that the math would allow. Except our universe doesn't.
Obviously if we were to exceed light speed we would turn into lizards and mate with each other and have lizard babies. I thought this was common knowledge.
in scifi there seems to be several types of ftl: one is typical warp like drive of trek, and star wars, and hyperdrives which is similar to transwarp/slipstream/xindi vortex travel, which is interdimensional travel so not technically violating light speed. and the least common one is interdimensional teleportation, BSG reimanging uses this tech, although they dint bother trying to explain it with technobabble at all, because of the showrunners allergy to trek-speak. STD, and a single episode arc of tng a group of terrorists were using interdimensional transporters.
trek also had other forms of ftl, but those are very rare, and its pretty much similar to the last 2.
Basically, physics says that nothing, not even information can actually travel faster than the speed of light. It's a universal limit that shows up when you do the math on relativity. This concept is called "causality".
Because of this, FTL communication is probably impossible. Quantum entanglement seems like it could provide a loophole, but it doesn't actually work that way. To actually use quantum entanglement for communication, it actually needs a confirmation message, which would have to be delivered by a different means (every quantum message needs a non-quantum confirmation). That confirmation would be bound by the speed of light, thus preserving causality.
This is a very very rough description based on my memory, so some details may be a little off, but it should cover the gist. This article goes into more detail:
Edit: After reading, the answer is more that attempting to impart information onto the entangled particles to send a message necessarily breaks the entanglement and thus does not transmit the information to the other side. Entangling the particles makes their states related to each other, but only at the time of entanglement, and anything that changes either particle (including measuring it) will break the entanglement going forward.
Yup. You just summed up the start of the conversation I had with ChatGPT to figure out exactly what we were talking about Here and why the fact that even if we can’t directly send coherent information, if it appears that a change in particle A directly causes a change in particle B, and it appears that that causation happened Instantaneously, we can’t ever prove it or measure it or know it for certain, because the proving measuring and knowing would have to have occurred at instantaneously themselves in order to actually be proof at all. The even more fascinating part I wound up with is discovering the Holographic Principle, as discovered by Beckenstein and later expanded on and proven by Stephen Hawking, that says that all information in the 3-D world is actually encoded into a 2-D framework. That one blew my mind and I’m gonna be thinking about that for a while.
The holographic principle is fascinating, though a quick nitpick: I'm pretty sure we've only proven it for contracting spacetimes (as opposed to our expanding one), but a lot of people imagine it does apply to ours as well (I certainly suspect it does)
If you change one of the particles it just breaks the entanglement. If you measure one, then you instantly know the state the other will have when measured, but the result of your measurement - and therefore the other one also - is random. The only way to correlate the two measurements of the two particles is to send the results (at C or slower) to the same place and compare them. Otherwise each just looks like a random result.
Could you to the sub-C measurement test enough times to show that it just empirically works, and then use it on that basis? Or are you saying that the sub-C measurement would prove that it doesn't work (and it produces random noise)?
I read it. Doesn't mention FTL, because that's not a possibility for actually transmitting info.
Edit: I think the way these quantum encryption systems work is that basically the photons (and I assume it's polarization being measured) become the encryption key to a message that is sent conventionally.
Like the sender generates a bunch of entangled photons, sends the paired ones to the recipient, measures their photons and uses the results to encrypt the message, the receiver measures theirs and gets the same results, the sender sends the encrypted message over email or whatever, and the recipient has the same key because of entanglement.
Meanwhile an eavesdropper measuring the photons would mess them up for the recipient so the message wouldn't decrypt.
I'm familiar with quantum entanglement. It doesn't work because you have no way of affecting which state you'll measure, and thus what state the other particle will be in.
No they didn't, they sent a conventional signal that was encrypted with an entangled particle. Nothing was sent ftl, this is like if I had two boxes that I know have the same thing in them, an encryption key, and traveled across the world, and sent you a message, you have the other box, the information in that box didn't go ftl you just opened it later.
The FTL is the sci-fi component that is the subject of the thread, the quantum entanglement communication part is the real world piece they actually got working.
It will never be possible to use this for ftl communications. This is like saying in 100 years we will use very long steel rods to communicate ftl by pushing on them. The problem is fundamental.
That's not the part you were trying to say couldn't be done. ;) You were trying to argue that quantum entanglement couldn't be used to communicate, clearly it can.
The FTL bit is the science fiction premise of the thread. ;)
That is indeed that bit I was saying couldn't be done. Entanglement alone can't be used to communicate; a signal has to be sent conventionally over the distance.
The FTL bit is physically impossible, so it's not really "achievable in a reasonable time-frame"
Exoskeletons like Ripley's in Alien. We've got smaller ones, but I want to pilot a walking fork lift.
Pipe dream - battlemechs aka mechwarrior (not pacific rim). Very impractical but I want one anyway. Yes, I saw the robot fighting league by Megabots. I have their poster.
I've seen prototypes of these that were very impressive since like a decade ago, so I'm fully expecting those to be here soon. Power supply usually is the biggest issue
Okay I've had this astroid mining concept dining around my empty skull for a while now. The way I see it is that going up to space and mining an astroid for minerals and then bringing them back down to earth will never be a worthwhile endeavour. If you're mining them in space and using the material manufacturing in space then that seems more plausible. The only way I can think of planetary based astroid mining being worthwhile is if instead of mining the rock and sending it down in crafts, you just bump the astroid so it's on a collision course with earth and then mine whatever is left from impact. In anycase, I'd say we are far off being able to mine asteroids since imo, the only worthwhile way to do it is by having the entire process in space. And we're not even close to that level of infrastructure existing in space.
Here's a link to some books on the subject. You're right, most people figure it would be putting our heavy industries in space and bring down what ever products are needed.
We can get a major shot in the arm if we can find a solid industrial use for iridium that sufficiently eclipses any other element. Or some alloy to the same effect.
Unfortunately, it's so rare that it's next to impossible to do any real amount of testing.
I'd really like to at least see humanity fully switch to clean energy in my lifetime but I'm losing hope.
I should already be able to take a self-driving flying taxi to work. I should already be able to vacation on the moon. We shouldn't be burning stuff to power all our modern tech.
I grew up on 80s/90s scifi. I hope humanity can get it's shit together and that the current anti-intellectualism phase we're in is just part of a larger cycle.
We have auto-pilots for planes, those are mostly fine. People are the problem. I dont trust humans to operate motor vehicles in 2 dimensions, let alone 3...
Obviously I know how they work, I saw it in a documentary about Airplanes. The Otto pilot inflates at the press of a button (or is inflated manually) and they fly the plane.
To be fair, you have a 1 in 95 chance of dying in an automobile accident.
Based on modern safety standards for everything else, that's unacceptable.
If I offered you a job and said you have a 1 in 95 chance of dying from working this job, you would refuse. The most dangerous job in the USA is logging, with about a 1 in 1000 chance of dying. More lumberjacks die driving home than die working their extremely dangerous job.
Not only should we have self-driving flying taxis by now, but we should also at least have level 5 self-driving cars so people aren't constantly dying driving to get groceries or pick up their kids.
What we need is more bicycle roads, pedestrian walk ways and public transportation
Suffice to say that 1 bus is safer than 30 cars but it also generates a shit tonne less pollution, but also keep in mind that the vast majority of car rides are short distance, even in the US
In the Netherlands they changed everything to prefer bicycles and walking and it's noticable. It changed architecture. It's why in the Netherlands there are broad loads of small super markets. Wherever you are within a town you'll have a super market at walking distance
Many people there don't have a car, not because they can't afford it but because they don't want one. Cars are expensive, cumbersome, dangerous, and ugly. You won't see depressing towns there that are 70% concrete roads or parking lots. It's all beautiful because they got rid of all that, it isn't needed.
In before anyone starts about how this can't be done in the US: it can, and quite easily. Pedestrian and bicycle infrastructure costs a fraction of car infrastructure, it's easier and faster to build, no parking lots required, you can now make that a store and get taxes from it, it'll make your cities richer. People get more exercise, they'll be healthier and happier, there are no downsides. Inclines near mountainous areas? Electrical bikes to the rescue.
Please please do NOT push this car stuff, especially flying car stuff. It's not needed, it's a waste, it's polluting even when electric, and we have flying cars, they're called planes and there is a reason why pilots need to learn and train a LOT more than car drivers.
Sure. I agree with all of that. But I live in a suburban sprawl of a US city that is just dense enough to have lots of cars, but nowhere near dense enough to have decent public transportation...unless we as a society decided to bulldoze this entire vast suburban landscape and start over with density as a goal. It's hot here too. Nobody is riding their bike 12 miles to work in 95⁰ weather (35⁰ for our metric homies).
Maybe within the next few years the Netherlands will let me and my family in as refugees so I can bike everywhere on a 72⁰ summer day.
But I like where your head's at. Hopefully you're young and can make a difference.
Where I grew up, there was a town that had been intentionally flooded to make a reservoir, or so my parents told me; they claimed that when the reservoir was low, you could see the top of the church steeple. At the time, I drove past the area nearly daily and would often survey the waters, but never found anything that was likely to be more than shadows or a trick of the eye. At the time, I had barely learned of climate change and so wasn't worried about it; I just liked the idea of a structurally intact, intentionally flooded city.
I just looked it up to make sure I was remembering the details correctly. It turns out that either I misremembered or my parents exaggerated. The town apparently existed and was flooded, but at the time of flooding consisted of foundations and one very tall flagpole. Apparently it's a common pastime of kayakers and the like to look for the top of the flagpole. This is probably what my parents were referring to.
Apparently, back in the day the government decided that some places weren't worth saving, and the benefits of building dams and flooding the towns outweighed other considerations.
The movie 'Deliverance' has a plot about something like this happening.
fusion maybe, but in scifi, it often requires an alien race making first contact, we wont even get to things like anti-matter tech without that intervention. SG1 is more in our time frame, but with aliens already possessing advanced tech
I'm hoping we'll get a couple of big medical breakthroughs on nuerodegenerative diseases and cancer in the same way HIV is now much more manageable than it once was.
I think genetic engineering is the most high-potential tech right now. They're already using it to cure sickle cell, and my (total non-expert, probably way too hopeful) pipe dream is that we could basically treat it like we can open a terminal on the body some day and change whatever we want.
Edit: I just want to point out that I'm imagining curing cancer, reversing aging, etc. Not like, additional orifices or anything.
external gestation...a womb with a view
severe genetic manipulation... designer babies
digit/limb/organ regeneration
Seems entirely reasonable that a Gattaca future is achievable. Whether desirable is the other question. Somewhere CJ Cherryh is being worshipped as a prophet.
Artificial wombs are something that's often presented as dystopian, but I would imagine would actually be a very good thing. Beyond the obvious help it would be to infertile couples that desired children, they would if commonly adopted eliminate the danger of birth and pregnancy complications, and discomfort associated with the process. Probably not everyone would want to use it, but I'd bet even having the option would mean a lot to a lot of people.
And then all of this gave birth to the terrorists known as the Naturalists™...
The real downside to artificial wombs is that we may rapidly become dependent on them. Half of pregnancies result in spontaneous abortion. With external gestation that assumedly wouldn't happen. That's a hell of a lot of evolutionary pressure which could have all kinds of consequences.
They just released a story about removing the gene that causes down syndrome. Pretty huge
Artificial stem cells seem like the next thing to really revolutionize medicine.
Quantum computers for brute force hacks seems doable in 100.
Eye tracking pointer devices will likely be more convenient than mice within a dozen or two years. This will probably be widely available for people who are paralyzed first.
Diamond processors are always 10 years away, but I think we can do it in 100. This would revolutionize the amount of power we can put through a chip without worrying about cooling.
Quick charge capacitor replacements for standard rechargble batteries
Low yield fusion plants. I'd like to think of them as capable of high yield, but it's much harder than initially thought. Some ideas are quite promising for low yield.
The eye tracking stuff exists already. There are medical device companies that build and sell these things.
I feel like the bottleneck will be with smooth continuous motions. It's very easy to move a cursor in that way with a mouse but you can't do that motion with your eyes unless you are looking at something else that's moving.
Fair. Check this out. The existing stuff is pretty cool https://youtu.be/CP3t8qMHcsM
Vaccines. Maybe in 100 years we'll even be able to eliminate measles...again.
I suspect we will see a human brain to digital interface. I don't think it will be "downloading minds" or anything, but I could see someone finding a way to plug a specialized camera or mic in to have a full functioning robotic replacement part.
I'm pretty sure they already have the beginning pieces to this, but its too specialized and expensive to do anything commercial with it yet.
This is so terrifying to me. I feel like it'll end up like the Black Mirror episode with the subscription model, getting more and more expensive with fewer features.
Common People
That episode made my wife and I really hope this tech never becomes a thing.
Cochlear implants are a form of this, and are already commercial. I remember having a conversation with a guy at a doof about 10 years ago, standing right near a loud sound system, and it took me 20 minutes to realise he had one. He was completely deaf without it on.. I can only assume the tech is much better these days.
Similar things exist for vision (though maybe not yet commercial?).
bsg, sga all had the brain interface thing going on. especially the cylon part was all about that.
Look up Daylight DC-1 might be what you are looking for
Oooohhh, thank you
I remember we could use the game boy advance SP outside. Is this screen technology used for PC?
They exist as monitors. In videos they kind of look like really early crappy LCD screens.
I'd just sit in the shade.
Tricorders, cellphones are already partway there they just need more durable, small sensors like a handheld light spectrometer to tell what things are made of and a handheld interferometer to detect gravity
Check out the app Phyphox, it uses all your existing sensors and probably surpasses tricorders in several ways while, of course, lacking in a few others.
I can detect gravity without a device:
Jump off a roof. If you hit the ground, you've detected gravity.
You could just raise your arm and let it loose...
Computer circuits based on light instead of electricity.
We currently carry tricorders in our pockets. I can see a medical tricorder being ubiquitous for field medics, ships, and the like within 100 years.
living in a self-sustaining ecological-aware community that values freedom and diversity and everyone having their needs met
I saw something about a city in India being super eco-friendly. I'm not sure what was the name of the city, but it looks like they have a few.
https://www.magicbricks.com/blog/world-environment-day-2025-indias-10-greenest-cities-driving-real-estate-demand/140400.html
Nuclear fusion seems increasingly achievable.
They are down to 2 main problems now. The main one is (the cost of) scaling up. Fusion reactors will be more effective then bigger they are. The tiny test ones are already past break even.
The other is wall material. Apparently the radiation has an annoying ability to transmute the elements making up the wall of the reactor. They are working out a material that can maintain its bulk mechanical properties, even with random elements appearing in its internal structure.
The only one I heard news about breaking even was that thing that shot a lot of lasers to a pellet. For a fraction of a second It broke even or produced slightly more than they poured in, but it was much less of what they spent.
There's been something else new?
I saw a talk on the subject about a year back. It was discussing tokamak reactors, from an engineer working on them. The small ones can't sustain a break even state, but they are affected by the inverse square law to a larger degree. I believe China is about to start/has started construction on a power station sized test reactor.
The pellet sort are a different type. They have different pros and cons.
Railguns, there already exist prototypes that destroy themselves. So close!
I thought we already had rail guns on ships?
No. Well kinda.
The Ford class uses what is basically a rail gun to launch planes but big navy decided against continuing development on railguns as a weapon.
A lot of black mirror stuff.
Apologies for the blanket pessimism but the last decades darkened my view.
Is it cheating to say AI and humanoid robots?
Anti-aging tech, if so.
Cancer curing nanotechnology
borg nanoprobes, or replicator nanites of sg1 and sga.
Pre-progammed viruses to set in motion whatever changes you want in the body.
Ai and eeg can read brain waves generate images already kinda decent, maybe meet the robinsons memory viewer machine.
Can we get a dream recorder, please?!
I feel like wed learn everyone has cool dreams and pivot back to skill being a thing over just imaginstion and prompts lol
Direct brain interfaces for, like, VR. So instead of a screen strapped to your face, your visual cortex is just stimulated so you see the game using your own "hardware." A literal Matrix type environment for your mind.
This is either gonna be cool and fun, or scary and evil. But it will exist.
I don't think we'll be able to upload knowledge any time soon, as we're a long way from properly mapping how the brain handles this.
But visual inputs for VR/AR is much closer, as there is already some functional implants for something similar: having cameras produce neural stimuli has been a thing for a few decades now, and it's now at the stage where some blind people have been able to regain a limited form of vision despite not having functioning eyes. The tech is only going to get better, so at some point it can be used to augment normal vision.
they had an ai generate images based off thoughts or dreams or something, I imagine its further ahead now too lazy to look for more articles https://www.nbcnews.com/news/amp/rcna76096
So the Flintstones was actually about the future?!
Portable communicators. It would be slick to have a USB c tricorder though.
...you mean phones?
Hold up. I'm pretty sure things that already exist don't count.
Download the Phyphox app to access your phones raw sensor data. Very much like a tricorder.
You've just destroyed my afternoon, thanks and congratulations
Edit: installed it. very cool. It would be crazy on my watch though.
https://www.thewandcompany.com/tricorder/
They exist in Switzerland.
https://en.m.wikipedia.org/wiki/Sarco_pod
https://www.swissinfo.ch/eng/assisted-suicide/after-the-first-sarco-pod-death-will-switzerland-introduce-stricter-rules-for-assisted-suicide/88824081
They already have them that you can carry in your pocket.
Yeah but they make such a mess.
I read that as Sucide Marines and was confused for a bit
That'd be pretty expensive to run if you think anout it. And who'd do the cleanup?
Blend them up and flush them into the sewage system.
🤮
Fully autonomous humanoid robots. Unfortunately with out-of-control AGI they will probably kill me.
It would have been cool to have a benign C3-PO or R2D2.
FTL communication using quantum entangled particles.
https://www.esa.int/Enabling_Support/Preparing_for_the_Future/Discovery_and_Preparation/ESA_takes_steps_toward_quantum_communications
Not FTL though. Slower than light, causality preserving version? Sure.
Huh?
Exceeding FTL (and breaking causality) is basically a sci fi trope at this point with about as much credibility as psychics. To have at least some credibility you need one of: a testable hypothesis, or an unexplained phenomenon. Right now we have neither. At best, we have some equations, that work below light speed, where we can extrapolate past light speed and see how the math works. The problem is: none of these equations are testable as they all contain infinities or other asymptotic features that prevent passing light speed itself. So, if there's no viable math to get from sublight to FTL, and there's no unexplained phenomena, then what we're left with is nothing.
Even quantum entanglement, which is a darling of sci fi whenever they need a plot device (hello Le Guin and the ansible), has categorically been shown to obey causality and the light speed limit in every lab test.
At some point it's like asking for negative mass, antigravity, or other things that the math would allow. Except our universe doesn't.
I've got a wormhole to sell you ;)
Obviously if we were to exceed light speed we would turn into lizards and mate with each other and have lizard babies. I thought this was common knowledge.
in scifi there seems to be several types of ftl: one is typical warp like drive of trek, and star wars, and hyperdrives which is similar to transwarp/slipstream/xindi vortex travel, which is interdimensional travel so not technically violating light speed. and the least common one is interdimensional teleportation, BSG reimanging uses this tech, although they dint bother trying to explain it with technobabble at all, because of the showrunners allergy to trek-speak. STD, and a single episode arc of tng a group of terrorists were using interdimensional transporters.
trek also had other forms of ftl, but those are very rare, and its pretty much similar to the last 2.
And every one of those are as grounded in reality as sci fi's agelong obsession telepaths, telekinesis, or mutants with powers.
There is a class of modern sci fi authors are all coming to terms with this.
I'd recommend checking out stories like Neptune's Brood -- sci fi which takes on interstellar economics in slower than light scenarios.
Basically, physics says that nothing, not even information can actually travel faster than the speed of light. It's a universal limit that shows up when you do the math on relativity. This concept is called "causality".
Because of this, FTL communication is probably impossible. Quantum entanglement seems like it could provide a loophole, but it doesn't actually work that way. To actually use quantum entanglement for communication, it actually needs a confirmation message, which would have to be delivered by a different means (every quantum message needs a non-quantum confirmation). That confirmation would be bound by the speed of light, thus preserving causality.
This is a very very rough description based on my memory, so some details may be a little off, but it should cover the gist. This article goes into more detail:
https://bigthink.com/starts-with-a-bang/quantum-entanglement-faster-than-light/
Edit: After reading, the answer is more that attempting to impart information onto the entangled particles to send a message necessarily breaks the entanglement and thus does not transmit the information to the other side. Entangling the particles makes their states related to each other, but only at the time of entanglement, and anything that changes either particle (including measuring it) will break the entanglement going forward.
Yup. You just summed up the start of the conversation I had with ChatGPT to figure out exactly what we were talking about Here and why the fact that even if we can’t directly send coherent information, if it appears that a change in particle A directly causes a change in particle B, and it appears that that causation happened Instantaneously, we can’t ever prove it or measure it or know it for certain, because the proving measuring and knowing would have to have occurred at instantaneously themselves in order to actually be proof at all. The even more fascinating part I wound up with is discovering the Holographic Principle, as discovered by Beckenstein and later expanded on and proven by Stephen Hawking, that says that all information in the 3-D world is actually encoded into a 2-D framework. That one blew my mind and I’m gonna be thinking about that for a while.
The holographic principle is fascinating, though a quick nitpick: I'm pretty sure we've only proven it for contracting spacetimes (as opposed to our expanding one), but a lot of people imagine it does apply to ours as well (I certainly suspect it does)
I followed this branch of the rabbit hole. Goddamn you for bringing another contradiction into play in my brain!
Not possible; entanglement collapse can't be used to send information
The idea is this:
2 particles are quantum entangled. Whatever happens to one instantly happens to the other regardless of distance.
So you establish a state that means "0" and a state that means "1" and you can send binary.
At a minimum, you have quantum Morse code.
If you change one of the particles it just breaks the entanglement. If you measure one, then you instantly know the state the other will have when measured, but the result of your measurement - and therefore the other one also - is random. The only way to correlate the two measurements of the two particles is to send the results (at C or slower) to the same place and compare them. Otherwise each just looks like a random result.
(I know nothing about this)
Could you to the sub-C measurement test enough times to show that it just empirically works, and then use it on that basis? Or are you saying that the sub-C measurement would prove that it doesn't work (and it produces random noise)?
I'm not sure what you mean by 'use it on that basis'. Yes, entanglement has been proven to work, but it can't be used to communicate FTL.
Read the link posted. They already did it. In 2007. At a distance of 144km.
I read it. Doesn't mention FTL, because that's not a possibility for actually transmitting info.
Edit: I think the way these quantum encryption systems work is that basically the photons (and I assume it's polarization being measured) become the encryption key to a message that is sent conventionally.
Like the sender generates a bunch of entangled photons, sends the paired ones to the recipient, measures their photons and uses the results to encrypt the message, the receiver measures theirs and gets the same results, the sender sends the encrypted message over email or whatever, and the recipient has the same key because of entanglement.
Meanwhile an eavesdropper measuring the photons would mess them up for the recipient so the message wouldn't decrypt.
I'm familiar with quantum entanglement. It doesn't work because you have no way of affecting which state you'll measure, and thus what state the other particle will be in.
Read the link posted. They already did it. In 2007. At a distance of 144km.
No they didn't, they sent a conventional signal that was encrypted with an entangled particle. Nothing was sent ftl, this is like if I had two boxes that I know have the same thing in them, an encryption key, and traveled across the world, and sent you a message, you have the other box, the information in that box didn't go ftl you just opened it later.
there is no path to ftl communication here.
have a basic video on the topic: https://www.youtube.com/watch?v=9oBiS_Yb9Ac
The FTL is the sci-fi component that is the subject of the thread, the quantum entanglement communication part is the real world piece they actually got working.
It will never be possible to use this for ftl communications. This is like saying in 100 years we will use very long steel rods to communicate ftl by pushing on them. The problem is fundamental.
That wasn't FTL
That's not the part you were trying to say couldn't be done. ;) You were trying to argue that quantum entanglement couldn't be used to communicate, clearly it can.
The FTL bit is the science fiction premise of the thread. ;)
That is indeed that bit I was saying couldn't be done. Entanglement alone can't be used to communicate; a signal has to be sent conventionally over the distance.
The FTL bit is physically impossible, so it's not really "achievable in a reasonable time-frame"
This will be useful for all the people over at [email protected]
Exoskeletons like Ripley's in Alien. We've got smaller ones, but I want to pilot a walking fork lift.
Pipe dream - battlemechs aka mechwarrior (not pacific rim). Very impractical but I want one anyway. Yes, I saw the robot fighting league by Megabots. I have their poster.
I've seen prototypes of these that were very impressive since like a decade ago, so I'm fully expecting those to be here soon. Power supply usually is the biggest issue
Asteroid mining. We've had the tech to get people to the asterodi for decades, just lack the will to do it.
Okay I've had this astroid mining concept dining around my empty skull for a while now. The way I see it is that going up to space and mining an astroid for minerals and then bringing them back down to earth will never be a worthwhile endeavour. If you're mining them in space and using the material manufacturing in space then that seems more plausible. The only way I can think of planetary based astroid mining being worthwhile is if instead of mining the rock and sending it down in crafts, you just bump the astroid so it's on a collision course with earth and then mine whatever is left from impact. In anycase, I'd say we are far off being able to mine asteroids since imo, the only worthwhile way to do it is by having the entire process in space. And we're not even close to that level of infrastructure existing in space.
https://bookshop.org/beta-search?keywords=asteroid+mining
Here's a link to some books on the subject. You're right, most people figure it would be putting our heavy industries in space and bring down what ever products are needed.
We can get a major shot in the arm if we can find a solid industrial use for iridium that sufficiently eclipses any other element. Or some alloy to the same effect.
Unfortunately, it's so rare that it's next to impossible to do any real amount of testing.
I would guess that we'll most-likely have AGI in 100 years. That's pretty futuristic and impactful.
Most of the stuff in Jules Verne's books, even Paris in the Twentieth Century.
(Well, the moon gun would need to be a very long railgun, not a gunpowder cannon, if you want crewed capsules, but still.)
I'd really like to at least see humanity fully switch to clean energy in my lifetime but I'm losing hope.
I should already be able to take a self-driving flying taxi to work. I should already be able to vacation on the moon. We shouldn't be burning stuff to power all our modern tech.
I grew up on 80s/90s scifi. I hope humanity can get it's shit together and that the current anti-intellectualism phase we're in is just part of a larger cycle.
Flying taxis won't happen, way too many risks, even in the future, never mind the horrors of having your skies full of that crap.
We have auto-pilots for planes, those are mostly fine. People are the problem. I dont trust humans to operate motor vehicles in 2 dimensions, let alone 3...
I don't think auto pilot works how you seem to think it does...
Obviously I know how they work, I saw it in a documentary about Airplanes. The Otto pilot inflates at the press of a button (or is inflated manually) and they fly the plane.
To be fair, you have a 1 in 95 chance of dying in an automobile accident.
Based on modern safety standards for everything else, that's unacceptable.
If I offered you a job and said you have a 1 in 95 chance of dying from working this job, you would refuse. The most dangerous job in the USA is logging, with about a 1 in 1000 chance of dying. More lumberjacks die driving home than die working their extremely dangerous job.
Not only should we have self-driving flying taxis by now, but we should also at least have level 5 self-driving cars so people aren't constantly dying driving to get groceries or pick up their kids.
No
What we need is more bicycle roads, pedestrian walk ways and public transportation
Suffice to say that 1 bus is safer than 30 cars but it also generates a shit tonne less pollution, but also keep in mind that the vast majority of car rides are short distance, even in the US
In the Netherlands they changed everything to prefer bicycles and walking and it's noticable. It changed architecture. It's why in the Netherlands there are broad loads of small super markets. Wherever you are within a town you'll have a super market at walking distance
Many people there don't have a car, not because they can't afford it but because they don't want one. Cars are expensive, cumbersome, dangerous, and ugly. You won't see depressing towns there that are 70% concrete roads or parking lots. It's all beautiful because they got rid of all that, it isn't needed.
In before anyone starts about how this can't be done in the US: it can, and quite easily. Pedestrian and bicycle infrastructure costs a fraction of car infrastructure, it's easier and faster to build, no parking lots required, you can now make that a store and get taxes from it, it'll make your cities richer. People get more exercise, they'll be healthier and happier, there are no downsides. Inclines near mountainous areas? Electrical bikes to the rescue.
Please please do NOT push this car stuff, especially flying car stuff. It's not needed, it's a waste, it's polluting even when electric, and we have flying cars, they're called planes and there is a reason why pilots need to learn and train a LOT more than car drivers.
Sure. I agree with all of that. But I live in a suburban sprawl of a US city that is just dense enough to have lots of cars, but nowhere near dense enough to have decent public transportation...unless we as a society decided to bulldoze this entire vast suburban landscape and start over with density as a goal. It's hot here too. Nobody is riding their bike 12 miles to work in 95⁰ weather (35⁰ for our metric homies).
Maybe within the next few years the Netherlands will let me and my family in as refugees so I can bike everywhere on a 72⁰ summer day.
But I like where your head's at. Hopefully you're young and can make a difference.
Orbital habitats with rotational gravity.
Underwater cities
With climate change and coastal flooding, it's coming, just not in the form you're thinking of.
You're implying venice ?
Where I grew up, there was a town that had been intentionally flooded to make a reservoir, or so my parents told me; they claimed that when the reservoir was low, you could see the top of the church steeple. At the time, I drove past the area nearly daily and would often survey the waters, but never found anything that was likely to be more than shadows or a trick of the eye. At the time, I had barely learned of climate change and so wasn't worried about it; I just liked the idea of a structurally intact, intentionally flooded city.
I just looked it up to make sure I was remembering the details correctly. It turns out that either I misremembered or my parents exaggerated. The town apparently existed and was flooded, but at the time of flooding consisted of foundations and one very tall flagpole. Apparently it's a common pastime of kayakers and the like to look for the top of the flagpole. This is probably what my parents were referring to.
Still pretty cool, though.
https://tnmuseum.org/junior-curators/posts/underwater-ghost-towns-of-tennessee
Apparently, back in the day the government decided that some places weren't worth saving, and the benefits of building dams and flooding the towns outweighed other considerations.
The movie 'Deliverance' has a plot about something like this happening.
New Orleans circa Hurricane Katrina...?
fusion maybe, but in scifi, it often requires an alien race making first contact, we wont even get to things like anti-matter tech without that intervention. SG1 is more in our time frame, but with aliens already possessing advanced tech
I'm hoping we'll get a couple of big medical breakthroughs on nuerodegenerative diseases and cancer in the same way HIV is now much more manageable than it once was.
If anyone said space harpoons/orbital bombardment, they'd be wrong - we already have that technology deployed in orbit right now.
Robocop Bell Riots suppression?
The Oscilation Overthruster.
I think genetic engineering is the most high-potential tech right now. They're already using it to cure sickle cell, and my (total non-expert, probably way too hopeful) pipe dream is that we could basically treat it like we can open a terminal on the body some day and change whatever we want.
Edit: I just want to point out that I'm imagining curing cancer, reversing aging, etc. Not like, additional orifices or anything.