9

Falling down a K hole. It is hard to keep from responding to the world - especially if someone hurts you to see if you are faking. But it is a lot easier with drugs. Ketamine is used to achieve this state. https://www.verywellmind.com/what-is-a-k-hole-21861 Ketamine is a dissociative drug. In simple terms, dissociative drugs make users feel detached ...


8

We have some examples in our real world of pushing back the ocean, just to cite a few: The Dutch Afsluitdijk The Afsluitdijk (literally translated: Shut-off-dike) was completed in 1932, thereby shutting off the Zuiderzee (lit: Southern Sea) from the North Sea. Until then, the Zuiderzee had been a large bay south of the North Sea which gave maritime ...


7

Plausible? No. Works for a story? Sure. That's not to say it couldn't form a good premise for a soft sci-fi short, or something of that nature, or perhaps a background for a dystopian setting. But there are just two many problems to deal with here for this to be plausible. DNA. This gets addressed a lot in xenobiology questions, but there's no reason to ...


4

as @L.Dutch already say theres many country do this. the method https://en.wikipedia.org/wiki/Land_reclamation Land reclamation can be achieved with a number of different methods. The most simple method involves filling the area with large amounts of heavy rock and/or cement, then filling with clay and dirt until the desired height is reached. ...


4

Moons of gas giants tend to be tidally locked. They are also tidally heated. So there you have it. Go for thermal energy. Alternatively: if you can build teleporting gates, what is keeping you from building a Dyson sphere around your star? Ditch the gas giant and go for the mother lode.


4

The closest thing we build looking like what you describe are nuclear submarines. They can spend a lot of time underwater, taveling around at various depths, and considering their crew they could be seen as small villages. However they depend on land for their sustenance: supplies, fuel and obviously crew all come from there. In principle it would be ...


4

He is a robot powered by a fission reactor. Your character was an Indian astronaut who got into trouble on the far side of the moon. An alien probe was nearby. Realizing that a fellow life form was in trouble (and in trouble as a direct consequence of the activities of the alien explorers) the aliens save him - or save his mind. To save his consciousness,...


4

If by "weightless" you mean that the net force pulling their body is zero, they are for all practical purposes human-shaped baloons. There are toys that are just like that: remote-controlled helium-filled balloons with fins. They are more aerodynamic than a person, but given how little viscous and dense air is, the speed for a human air-swimmer should be ...


4

If they can change from weighted to weightless at will but retain their inertia, then they will be able to travel extremely fast by becoming weighted, diving to gain speed, then becoming weightless and using that speed to climb higher than they started. Humans free fall at a little over 100 mph, so they would be able to attain this speed in a dive, but over ...


3

Sure it is, and we can use modern technology to do it (NB: This relies on being able to see into the future further than the OP requirement, but if that's an acceptable change in scale, this would work.) So, have you ever heard of an RSA token? These are devices that work on the basis of giving you a passcode that changes every 30 seconds or so; similar to ...


3

Deaths all at once is tricky. You need the virus to turn deadly everywhere, all at once. Otherwise there will be quarantines, research and all that. Similar to this question: How could a seemingly-harmless virus become deadly at a predetermined date and time? Even with rapid and unnoticed spread, there will be many months between initial and final ...


3

Let's do some Geo-Engeneering Others have already proposed the sane ways for doing land reclamation, which leaves me with the insane ways of doing it. A question, dear reader, is this enough reclaimed land for your purposes? This looks somewhat like current Earth, but all the continents seem to have gotten fat. The most noticeable changes are the now ...


3

If by weightless but still have mass you mean they are light as air, they would also behave like air. In the sense of, they would get thrown around by wind a lot and would have trouble maintaining direction and speed. If they are NOT as weak as they are light, then they might flail around a bit more rapidly to "swim" around at a decent pace, but again, the ...


2

The obvious answer is you extract hydrogen. You can use it along with oxygen in fuel cells, or rocket fuel, or for fuel in a fusion reactor. Fusion reactors make the most sense in my opinion. You need hydrogen-3, which is rare hydrogen isotope. You won't have to transport massive amounts of hydrogen, you'll get the most energy and since hydrogen-3 is rare, ...


2

If the question is "Would MRI scans reveal that this person is in fact NOT brain damaged"? Pretty much, yes. The main thing that would be a giveaway is the brains response (as in brain activity) in certain parts ( https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1647299/ ) to hearing, pain, etc. There is no way (at least that I've found) to ignore this to fake ...


2

Energy is mainly provided by nuclear fusion with helium 3 mined on place Moon-encircling superconducting powerlines mean that everyone can use solar, even in the dark bits. Solar power satellites are also a possibility, if you're not into megascale engineering (and if you're not, why are you trying to terraform the moon?) A thick, breathable atmosphere, ...


2

waste heat is converted into energy as well Thermodynamic forbids you this, after a certain point. If you dump to the cold side of space that point is pretty low, though An artificial magnetic field (AI is my cheap answer on that, too), to keep radiation and other space threats at bay. No magnetic field is going to protect you from UV, X and gamma rays, ...


1

Yes I mean, it's not going to be very strong, certainly not One Piece levels of strong, but it's possible. There's a very notable problem at the beginning of this thought experiment, namely soft things have a very hard time cutting through harder things. For instance, a knife through butter works very well, because stainless steel is a lot harder than ...


1

First your premise that they won't "by trying too hard to detect a fake": As some one who has had a lot of CTs and MRIs: they may not find minute damage (esp. to axions) in patients who have brain injuries. However, they will do a CT & MRI right away and probably several different ones. This is because they will need to rule out bleeding in the brain ...


1

Expanding from my comment, I think you need to look at punting speeds (especially racing punts). With Medieval-style tech, I don't think fins are going to be very effective, with the materials they had available they'd be too stiff, too bulky, too inflexible, too floppy, to hard to fasten, too hard to get loose... You may get a couple custom-made ...


1

This is basically a matter of pulling together the necessary concepts at different levels of scientific plausibility. Assume your villain is a normal living, breathing, walking, talking, thinking and feeling human being. That's step one. Steps two and three involves (a) providing a source for the radiation and, (b) a way of protecting a human being from ...


1

A War Pick and Rope A War pick is essentially 1 side of a Pickaxe and 1 side of a hammer/axe. The pick side combines the advantages of a standard pick and crow bar. You can use it to help climb buildings, by stabbing the pick side into the wall. You can use it to destroy stones, rocks or metal contractions in your way. The metal pick will provide much ...


1

Forget the crowbar, get a halligan bar. Scavengers are less like burglars and more like firefighters they just want entry as easily as possible, so look at what fire fighters and other rescue units use. halligan bars are far more versatile than a crowbar and way better for getting through doors and walls. They were designed by firefighters to get into ...


1

Crowbar and Axe are the best frends of any scavenger. You can wear them both and they both are not bad weapons and have a lot of different usages. + knife - you shuold always have a knife of some sort with you in any kind of hiking even now.


Only top voted, non community-wiki answers of a minimum length are eligible