Questions tagged [reality-check]

Asks if a given concept is realistic in a given context. Answers should say yes or no, with supporting info. Compare this with the science-based and hard-science tags. This tag should never be the only tag on a question, because this tag frames how a question should be answered, not the topic.

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1answer
134 views

Tongue Keyboard

It is fascinating (and perhaps a bit scary) anticipating the human-technology interface in the next hundred years or so based on the acceptance of mobile computers in recent years. Based on current ...
5
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3answers
276 views

Biological Coolant System for Massive Organisms

The larger an animal, the harder it is to cool down. Ignoring the problem of bone/muscle strength vs size/weight and saying an animal could get to outlandish sizes, would a second cardiovascular ...
11
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6answers
5k views

Could you make Bat wings shaped like the different kinds of Bird wings?

I've been designing an an intelligent, bat-inspired avian race, and I've been struck with a question that I need answered. Now, I want to have these bats to fulfill different types of ecological ...
3
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1answer
61 views

Feasibility of compressing matter to electron degeneracy

So, I have been a bit disappointed with the answers on how to store degenerate matter from my previous thread, and now I'm even wondering whether one can produce it at all, without invoking ...
26
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19answers
10k views

What Purpose Would a Unicorn's Horn Serve in the Wild?

This famous tapestry shows all the "modernized" traits of a unicorn--basically just a pale-colored horse with a single horn on its head. Of course, single-horned animals do and did exist: The only ...
4
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3answers
85 views

Constructing a doomsday machine by manipulating the Higgs Field?

I've been working on a sci-fi series set about 1000 years in our future. The discovery of an alien threat leads the ruling government to conceive of a doomsday machine, which they hope will be so ...
1
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4answers
122 views

The biggest e-ink display in the world [closed]

tl;dr: What could be an approximate size of the biggest e-ink display with current Kindle-like pixel density if we would use nowadays the biggest available computing power to make it usable? Imagine ...
299
votes
25answers
25k views

Tomorrow is Groundhog Day… For everyone. How does society respond? [closed]

You wake up tomorrow and it's Wednesday again. Everybody remembers it, but whatever was physically done today is undone. Your favorite mug, which the dog knocked over is un-broken. The kid down the ...
-1
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0answers
33 views

How could superhuman speed and speedsters be made scientifically sound? [closed]

The usual problem I hear about superspeed, is that the human body would be torn apart while running at the speed of sound, regardless of anything else. Also, there really isn’t anything that exists ...
4
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4answers
625 views

Feasibility of Relativistic Artillery / Kill Vehicles

As far as it is known, Relativistic Kill Vehicles are a common weapon in science fiction and are rendered as powerful as nukes just due to their kinetic energy alone, a finite mass being propelled at ...
4
votes
1answer
77 views

Feasibility of Flywheel-Powered Artillery

As far as it is known, Flywheels are extremely efficient in energy storage, with the best even able to replace even the strongest batteries. They are accelerated by electricity to extremely high ...
2
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2answers
151 views

Would a parasite that turns peoples into succubi/incubi be possible?

I like demons as they're portrayed in popular culture. I wanted to make a "anatomically correct" succubus question, but StackExchange tells me that this one already exists (even if it is not ...
2
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1answer
90 views

Feasibility of molluscoids [closed]

Once again going back to stellaris (a videogame by Paradox Interactive), I've gained enough inspiration to ask the question, “The feasibility of molluscoids”. Molluscoids are mollusks, and in the ...
1
vote
1answer
87 views

could we create a society with no knowledge of the outside world? [closed]

could there be a way for, lets say our government, to start an isolated society which does not have any knowledge of the outside world? could this be possible?
2
votes
2answers
182 views

Would the Flamebreaker Armor in “The Legend of Zelda: Breath of the Wild” work?

The Flamebreaker Armor is a full plate armor present in the videogame The Legend of Zelda: Breath of the Wild, which protects the wearer from heat. When fully upgraded, it makes the wearer fireproof ...
9
votes
10answers
797 views

How to render Venus semi-habitable?

It must be very dark and hot on the surface of Venus, but my humans want to change that and make a Venusian colony. The problem? The extremely thick atmosphere would make it problematic to say the ...
14
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12answers
11k views

Is stealing the moon actually possible?

I'm writing a heist story set in the near future. The goal of my main protagonists is to actually steal the Moon. The budget of their escapade is not a variable; they will get this done however ...
4
votes
4answers
421 views

Would an alien race with diffused organs be viable?

The purpose of this question is to get an alien race with a diffused set of organs, which makes any part of their body interchangeable. Why would a species need this? Well for one it might be because ...
2
votes
3answers
222 views

Feasibility of Ordinatus' Hellfire Missiles

I was looking for special missiles that do more than just explode or release radiation, thus I looked at some of the harder Warhammer 40k weapons, until I came across the Hellfire Missile. To ...
11
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5answers
2k views

Dragon's Blood - If it was a realistic animal what would be the color of its blood?

It is typical of fantasy stories that there will be a dragon somewhere down the line. They are typically the strongest boss right before or after the main antagonist. Now the question is what color ...
0
votes
1answer
116 views

Feasibility of the Spore Mantis

In the movie, Kong: Skull Island, there is a species called the Spore Mantis. When stationary, the Spore Mantis looks like a giant, dead log. When active, it looks like a giant insect - a giant, ...
3
votes
1answer
124 views

Feasibility of Actuator-Boosted Ammunition [closed]

I was searching for better forms of ammunition across the net, which could replace the current standard types of ammunition, and I came across an interesting one on Deviantart, called Jackhammer ...
18
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2answers
4k views

A character steps outside in the upper atmosphere of Venus- how sunburned is he?

For complicated reasons our hero's blimp in the Venus atmosphere at an altitude of 50 km gets a tear in it and sunlight floods inside (there is no gondola, the blimp is a semi-ellipsoid of breathable ...
2
votes
2answers
149 views

Making an object to reach Jupiter's core and return information?

Would it be possible to create a probe which could survive the crushing pressures and temperatures to reach the solid core of Jupiter and return data to Earth? What would make this impossible? This is ...
1
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4answers
223 views

How can a large creature be deceptively fast?

So as I was creating a variety of creatures I wondered if speed is exclusive to smaller creatures or if a large organism could move deceptively fast to take prey or predator by surprise. This is ...
2
votes
1answer
122 views

Could a Hormagaunt evolve naturally? [closed]

This is a tyranid hormagaunt from Warhammer 40000: What I am asking is: could a creature similar to a hormagaunt (six-limbed, chitin (or something similar) plating, roughly pony-sized, reptilian head/...
-1
votes
2answers
86 views

Feasibility of the neuro strain

The neuro strain is a (virus) strain that affects the nervous system in drastic ways. Firstly, when the host is affected, their body will grow bigger than it would have originally been but not much ...
1
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2answers
98 views

Feasibility of the hypo-strain

In the isle, a game about dinosaurs and a extensive lore, there are strains (viruses)that cause or inflict different effects on the affected dinosaur. The hypo strain is capable of making the body of ...
3
votes
7answers
2k views

Not being able to recognize yourself as an old person [closed]

Let's say you are a young (20 something) clone of an old (over 80/90) person. Under what circumstances you'd be unable to recognize them as being... well, you? To make things even more complex, your ...
6
votes
1answer
627 views

Is this a plausible interstellar propulsion system?

Interstellar travel is hard and complicated, yet I want to have a plausible interstellar propulsion system for my setting. Rockets are out because of the rocket equation and the horrible top speeds ...
3
votes
2answers
731 views

Cutting an apple in a blink of an eye [closed]

Lets say you are John and a Master of using samurai sword, there is an apple in front of you and you slowly put your body to a stance while slowly pulling your sword from its container as soon as the ...
9
votes
4answers
382 views

Can korean bolt throwing cannons not be a dead end?

Alright, this will take some time to explain. There is historical context to my question. Over the course of the period of time from 16th century to the first half of 19th century, the European ...
1
vote
2answers
192 views

The Heptapods from ( The Arrival )

In the movie, Arrival, there is an advance alien race that arrives on are planet, with a few landing in specific places. The aliens species are called "heptapods" (by our standards). They have 7 ...
3
votes
6answers
275 views

How could a “Lonely Mountain” form?

I have seen some discussions about Middle Earth's Erebor, the "lonely mountain" and how it really isn't lonely. How could a true "Lonely Mountain" (a single peak in the middle of a vast plain) form? ...
0
votes
0answers
103 views

Using medical oxygen, how long can I breathe underwater in a bushfire? [closed]

This is a slightly different question to this one, but relevant to the subject of survivable oxygen concentration. I live in South Australia in a severe bushfire risk suburb in the Mt Lofty Ranges. ...
4
votes
2answers
79 views

How plausible would it be for post-apocalyptic survivors to develop a mass psychosis/culture bound syndrome of seeing ghosts?

Some kind of WW3/resource war event happens. The majority of human beings (definately over 90%, so billions) are killed by a series of bioweapon diseases used by both sides or die in the ensuing ...
3
votes
1answer
88 views

Could a waterborne virus contaminate the entire ocean?

Is it plausible that a virus could contaminate the entire ocean to where humans that enter it are highly likely to contract the virus? It doesn't necessarily have to be the whole ocean what with the ...
29
votes
15answers
8k views

Are generation ships inherently implausible?

So I've been thinking about the idea of a series that takes place on a small fleet of generation ships, traveling at around 10% of lightspeed to Proxima Centauri, which should take around half a ...
14
votes
9answers
4k views

Useful (late-)medieval Weapon against Iron Buildings?

I'm going to jump straight into a very small description of the world my first novel-thing is build around. It's an Earth-like planet orbiting a binary star. Climate is slightly more extreme than on ...
6
votes
5answers
495 views

Let's make a second Bible: Noel's Ark

Phone message to you, Noel, on 10th October 2016 (AD): Hey, Noel, it's Rudolf Jelínek here. God just send me a message on Facebook (I know it's true, because god gave me a vision in my sleep): ...
9
votes
5answers
2k views

Must all planets have a solid/liquid core?

At the moment it seems we have two different types of planet We have Rocky planets with a solid core that occupies most of the mass of the planet We have Gas Giants that contain a solid core but are ...
1
vote
5answers
180 views

How could mind relocation work?

When thinking of trans-humanism it's fairly common to find in fiction the idea of mind uploading, brain emulation, etc. But I was wondering how would it be possible to relocate a conscious mind to ...
6
votes
8answers
286 views

How could sentient stars work?

I'm considering making one "creature" that is encountered in a story a sentient star in an alternate universe. I hope to hand-wave a little of the more complicated stuff by saying "this universe's ...
0
votes
8answers
2k views

Would Stirling engines be good in space?

My knowledge of Stirling engines is that they work via a heat difference and are extremely heavy when used on a larger scale. This makes the use of them on vehicles a strange choice when there are ...
6
votes
1answer
68 views

Would there be Rayleigh scattering in an atmosphere of sulfur dioxide?

Can a planet with a dense atmosphere composed mainly of sulfur dioxide have a blue sky like Earth's due to Rayleigh scattering? Or would the composition change the color of the sky? I mean, it's well ...
5
votes
4answers
208 views

Skysteading: How to build a flying city

I am building a city in the sky; it floats thanks to hot air balloons and hydrogen. The main issue I have is how to make it grow, as this is not some kind of giant structure to start, it is a small(...
-3
votes
3answers
70 views

Oxygen-carrying vascular nanobots [closed]

People in my setting can have artificial red blood cells (they're nanobots or something similar). These are designed to fulfill the same role as regular red blood cells but have a much higher oxygen ...
4
votes
3answers
199 views

The Properties of Flaming Fire Magic

Magical fire is often depicted as flames. To get fire and flames the right mixture of oxygen, fuel and heat is needed. Assuming that the magic only provides the heat, there are only two chemical ...
7
votes
5answers
725 views

Help balancing my six-sided magic system?

I'm basically looking for advice on how to balance the magic system I'm designing for my novel. Basically, the way it works is this: There are six known Realms beyond this one where almost magic ...
3
votes
0answers
96 views

Anatomically Correct Enderman [closed]

As a fan of some of the unique creatures of Minecraft and after looking at the Anatomically Correct Creeper, I was wondering would an Enderman be possible? Enderman Facts: They're from a game called ...