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.

Filter by
Sorted by
Tagged with
-1
votes
1answer
51 views

Monetary system(or the abscense of it) in an economy where AI and robots have eliminated most jobs [closed]

I believe that if money and currency would become obsolete and disappear and most goods and services would become free if most jobs were eliminated by strong AI and automation. It is logic. If almost ...
6
votes
2answers
79 views

Aliens Using Both L and R-Amino Acids or Sugars - are they possible?

It's fairly common to see discussion of different chirality for amino acids and sugars whenever people ask for advice on plausible alien designs or biochemistry (e.g.: metabolizing left-handed sugars ...
2
votes
3answers
219 views

On a world that is ravaged by Carrington Events, is there any way for the inhabitants to develop electricity?

Inspired by the question On an Earth regularly ravaged by solar storms as strong as as the Carrington Event, how would technology advance? On a world that is ravaged by monthly Carrington Events, it ...
13
votes
3answers
3k views

How can an ocean of sea water behave like honey without changing the chemistry?

I am imagining a world where liquid water can exist outside our solar system and share a similar chemistry with our ocean, say there is traces of sodium chloride in water (not the heavy water kind). I'...
3
votes
1answer
80 views

Giant realistic Prototaxites like fungi in a hot climate

My planet is very similar to earth around 359 to 299 million years ago. years ago. It’s mostly covered in deserts, jungles, swamps, temperate forests, and their variants. (The Carboniferous period The ...
22
votes
4answers
6k views

Why would Dune sand worms, or their like, be attracted to even the smallest movement?

The sand worms in Dune are gigantic creatures. Confirmed sizes reach up to 450 meters long. And in the wiki it says "Some people believe that worms from 700 to even 1000 meters existed in the ...
6
votes
1answer
140 views

(TW: Strangling) Would this character actually have any difficulty breathing?

((Alright, so! I don't even know if this is the right place to ask, but I hope to hear your thoughts. Sorry for the morbid topic and thanks in advance!)) In a comic I'll eventually draw, there's this ...
1
vote
0answers
54 views

Thunderstruck and tesla beetles: Are they feasible?

Basically, I've been theorizing an alien planet for a conceptualized game project called "The Von Neumann Project," where you play as an android attempting to colonize a hostile alien world ...
2
votes
2answers
149 views

Sprinting Downforce on Titan

Since Titan has high air pressure, but low gravity, could settlers there wear wings or other methods of downforce (passive or active) on their suits/clothes to keep themselves grounded while they run? ...
3
votes
5answers
533 views

How would a rebel group best utilise ww2 era planes/equipment against a modern state/dictatorship? [closed]

For context: Modern United States, UK and several other countries have been taken over by a totalitarian dictatorship plotting to revive a Lovecraftian god(This happens later, does not affect this ...
3
votes
4answers
120 views

What would make a species of sentient starfish rationally and ethically choose between sexual and asexual reproduction? [closed]

Starfishs or seastars have sexes( they are either male or female) but they can reproduce both sexually and asexually. The latter is possible using fission or fragmentation. In this planet there is a ...
6
votes
4answers
139 views

Flash Flooding on Titan?

From what I’ve researched, Saturn’s moon Titan is believed to have a methane cycle throughout its seasons. Particularly, during the winter season, methane rain falls, filling Titan’s lakes and rivers. ...
2
votes
4answers
707 views

Realistic combat AI [closed]

The idea of combat robots is simple, they are robotic soldiers that don't eat, don't sleep and don't rest, but they never touch the issue of the AI they employ. The AI of a combat robot must meet the ...
0
votes
1answer
82 views

Anatomically correct amphisbaena

Amphisbaena is a creature from greek mythology. It is a snake, with another head at the end of its tail. I have a world in which I'm adapting various dragons to be scientifically viable. I've already ...
3
votes
1answer
38 views

Can a creature who uses anguilliform swimming swim in an up and down motion like cetaceans?

I am working on a xenobiology biosphere project, and I have a clade of creatures who evolved in the wetlands. They are disconnected entirely from life on our world, although they follow the same ...
7
votes
1answer
538 views

Can a hydraulic system also serve as a battery?

Hydraulics commonly use mineral oil or water to provide the pressure needed for mechanical movement, which is good but the liquid just sorta sits there not doing anything else. So I though “why not ...
2
votes
0answers
83 views
+200

Weather for a dense-atmosphere water world

In this answer, I describe a low-density water world with a surface gravity of 1g and a surface atmospheric pressure of 20 ATM. The air temperature at the 1 ATM altitude (naively, assuming a ...
5
votes
3answers
197 views

Would merfolk kept in captivity suffer from lack of oxygen?

In my story, in the midst of a human-merfolk war, merfolk are captured by humans, and are periodically de-scaled (they grow back) to sell their colorful scales as jewelry. In these farms, the merfolk ...
0
votes
4answers
141 views

Everyday life in a country/society where intentional homicide is not a crime [closed]

In this hypothetical society, intentional Homicide (murder) is not a crime but society can develop normally and people carry out normal lives. I believe this could be possible because I read that ...
4
votes
5answers
1k views

Evolutionary pressures for carnivorous elves

In a fantasy world I am creating, there exists a race of elf-like hominids that exist along side other races in this world. Note the "elf-like" portion as while they do have: Pointy ears (...
4
votes
1answer
94 views

Design of a scythe bicycle?

In ancient times, scythe chariots were all the rage. Sporting meter-long blades, they were a terror for primitive warriors. I presume that means that, unlike in bad Hollywood movies, the scythes ...
0
votes
5answers
187 views

Is it realistic and legal for someone who lives remotely in the UK to have a private mobile repeater?

Edit: Question has been edited due to confusion and details have been clarified on why they need a mobile signal. I'm currently writing a short story and have the idea that someone that lives in a ...
2
votes
2answers
105 views

Interstellar Space Travel via Time Travel

Building upon the questions from @States Time travel from stationary position? and @Travis Time travel from stationary position?, would it be possible to travel to other star systems within our galaxy ...
2
votes
2answers
74 views

Brain-Controlling Bacteria

As a Star Trek fan, I’ve been fascinated about the concept of the Borg and how they have used nanotechnology to assimilate every valuable species. They not only incorporate their technology into their ...
2
votes
0answers
45 views

Could the differences between day and night on this desert planet allow for strictly nocturnal condensation?

Here's the basic gist of this (debatably) habitable Earth-like desert planet: Size: Same as Earth Rotation: 30 hours (three extra hours of daylight followed by three extra hours of night) Revolution:...
0
votes
1answer
95 views

Implanted device in human body that can transmit over long distance

Previously linked question (which is closed but already has answers). Say we have a type of implanted device in human body (say, ear) used to communicate over a distance. I am thinking about a ...
6
votes
4answers
495 views

Moon hit strong enough to put it in a slow spin?

I’m building a world nearly equal to earth; i need a catastrophic event that make the moon start spinning breaking the tidal lock, a really slow spin, like 500 years for a full spin. i thought about a ...
3
votes
1answer
58 views

Could vulcanic activities make polar regions more inhabitable?

My basic idea is a polar region in a planet that, for whatever* reason, has a obscene amount of geothermic activity. The question is, will this be enough to create a micro-climate large enough to ...
4
votes
2answers
215 views

Collect powers from human body via miniature implantation

How much energy can we draw from miniature implanted device that collects energy from human body? The goal is to design a type of implanted device in human body used to communicate over a distance, ...
2
votes
1answer
100 views

Could a supervolcanic eruption in the Phlegraean Fields be triggered by detonating a 1-gigaton nuclear bomb and then fracking the resultant salt dome?

So. There's a group of nutcases in my setting; they are an ages-old, all-powerful secret society, yadda yadda yadda, control massive amounts of the world behind the scenes, have agents everywhere of ...
6
votes
4answers
3k views

How far should a 160 pound android be able to jump vertically and horizontally if they are 12.5 times as strong(can lift 1 ton) as an average human?

So I have this android character that has super-human abilities. I like her durability level, speed, and everything else, but I feel her jump is a bit to short. She can lift around 12 1/2 times, or 2,...
-2
votes
1answer
123 views

My alloy plausibility

My armour is able to take temperatures upto 500°c and tensile strength of 17 MPa . It is made with some knowledge of physics and material science. My suit is made of mono-crystalline iron and coated ...
6
votes
3answers
265 views

What is the largest size a creature using hemocyanin instead of hemoglobin could reach?

I haven't been able to find much on this question. I am making a world that is fairly cold compared to ours, not quite a snowball planet but enough that the highest average temperature is 66 degrees ...
2
votes
1answer
118 views

How to avoid resource curse with an extremely valuable and exclusive resource?

I have a nation, Arunya, which functions under different magical rules from the rest of the world. The entity governing their magic is much more closely tied to the state due to historical factors, ...
1
vote
2answers
75 views

What is the habitability of an Earth- like habitable planet that do not have any cloud covering?

Let's say I imagined a world that is as habitable as Earth and has the same oxygen levels, land to ocean ratio and similar average temperature. However it has no clouds at all. How different its ...
4
votes
1answer
98 views

How good is a magnetite sand defence really?

I've been considering filling my alien world with a plethora of magnetic creatures, all of which use magnetism in unique and creative ways. Of course these creatures are only going to be one genus, ...
2
votes
1answer
91 views

How many co-orbital Earths can we fit and NOT get them tidally locked?

According to Sean Raymond, a co-orbit of six Earth-sized planets, separated by 60 degrees of space, will stay stable for millions of years. And in his latest blog, he has gone a bit further and ...
9
votes
6answers
1k views

Could an object traveling at a significant fraction of light speed create a black hole?

Nothing with mass can reach the speed of light because the closer to the speed of light it gets the more mass it has tending toward infinite mass as it approaches light speed & the more mass it ...
17
votes
12answers
4k views

Space Piracy, a case study

I was reading James Blish again the other day and came across a passage wherein he suggested, with all seriousness, that the only article required to create a new age of piracy was ships that didn't ...
5
votes
6answers
1k views

How can an interstellar empire prevent its subjects from obtaining advanced computer technology?

My interstellar empire, the Dynasty, draws some inspiration from the Gao’uld of Stargate. Encompassing the entirety of the Hyades cluster, it is ruled with an iron (or platinum) fist by the Sovereign-...
3
votes
3answers
524 views

Is it possible to have four moon on different orbital elevations?

Could a planet that is twice the volume of the earth, have four moons but each orbital path is at a different angle? Eg: M1 has a max elevation of 10’N and a min of 10’S M2 has a max elevation of 17’N ...
3
votes
1answer
113 views

Could plants exist on a planet with only 12% of its surface covered by water?

Would there be sufficient rainfall on my planet, Zavnious for plants, animals and intelligent beings to exist if only 12% (+-159,000,000km2) of its surface is covered in water, if the planet has a ...
1
vote
1answer
48 views

Does this world sound realistic? (more tectonic activity)

Essentially, I want some characteristics for my world, and I want to have some amount of realism, so that I can use that realism to guide my writing. My world, Treyidal, is an about earth sized planet,...
-4
votes
2answers
155 views

How many people needs to die for society to collapse? [closed]

A limited nuclear exchange occurs in the world, how many people would have to die for civilization to collapse? With the goverments falling and the economy in ruins. I need an approximate death toll ...
7
votes
3answers
122 views

Would spontaneous electron excitation be biologically dangerous?

I am considering a setting where an all-permeating "background magic field" has a side-effect of randomly bumping electrons of any contained matter into an excited state (let's say it can ...
6
votes
3answers
332 views

What skin, hair and eye colors would people living under different stars have?

My setting includes several natural and terraformed earth-like worlds orbiting various main sequence stars, from M class dwarfs to A class giants. Humanity has independently developed from stone age ...
3
votes
4answers
175 views

are my rivers and map little realistic

This is my first world map so I just need to know if said rivers are realistically flowing from point to point. And if you have other tips those would be helpful as well. Rivers flow from the ...
5
votes
2answers
122 views

Can I make a wind tunnel with portals?

Was looking through some of my old works and found this: By putting Portal A1 on the right side and Portal B1 on the left, we have a tunnel to two places. If we place Portal A2 at a high elevation ...
1
vote
4answers
129 views

What Could Create the Remaining Two Types of Single-Biome Planets?

There have been numerous questions in this SE about single-biome planets popularized in the Star Wars mythos. Despite the criticisms, these worlds are plausible, and they all involve the right ...
-1
votes
2answers
103 views

How can these people fight these monsters? [closed]

On an alternate earth, lethal Pliosaurs size creatures infest the ocean, making sea travel impossible. Their cousin species tries to invade the surface every five years. The advantages of this ...

1
2 3 4 5
117