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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4answers
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How fast do you need to throw a wooden stick for it to be lethal with bare hands? [closed]

how hard does one need to throw (With bare hands) in order for a lowly stick to become lethal ? Also taking into account distances, both close and long distances. Finally how much strength would be ...
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2answers
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What would happens if a human was compressed to the shape and size of a volley ball?

Imagine a device that forms a spherical electromagnetic barrier around an average human, and rapidly shrinks until its approximately the volume of a volley ball. What would be the aftermath other than ...
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0answers
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Could the MUTO wing structure work in any way?

The male MUTO creature new godzilla movies has a very peculiar wing design: despite having leathery wings, those don't connect to the side of its body, but to two support "rods" that seem to come out ...
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2answers
66 views

I need a spacecraft to be pulled into the sun’s gravity!

So, as I understand it, the spacecraft would need to move in the opposite direction to the orbit. Are there any calculations I could make to attach a clicking-tock onto this? If the spacecraft were ...
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3answers
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can spacecraft heat be 'vented' with entangled particles?

Basically, the title. Trying to figure out how reasonable stealth in space would function, and while I have mitigated it, I am looking for methods to improve it. But mainly, is creating a sort of heat ...
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8answers
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How Would I Make an Oceanless World Feasible?

The planet I'm thinking of is of similar size and distance from its star relative to Earth, but it lacks oceans, instead consisting of one massive continent with a huge mountain range (reminiscent of ...
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4answers
50 views

How could Ice Spikes naturally occur?

Working on a medieval setting I thought of the idea of a biome similar to Minecraft Ice Spike Plains where this ice structures naturally occur. These structures in particular are tall and sharp towers ...
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2answers
92 views

What might a world look like where basic programming skills are as common as literacy today? [closed]

In the other related question, I am exploring how might a world like ours develop to a world where programming skills are considered to be basic literacy. Currently, possibly less than 1% of world ...
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1answer
78 views

What could have been the history of a world where programming skills are considered to be basic literacy?

Sometimes I hear from other professionals, "it has become impossible to talk to IT professionals, what they talk it sounds like gibberish". There are lots of efforts for better connecting to ...
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0answers
49 views

How would a Universe-wide species operate [closed]

Let’s say in the far far FAR future, humanity has colonized the entire universe. Technology allows for faster than light travel, immortality, the building of megastructures, e.t.c. Now, humanity will ...
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Could ocean and wind currents form on a tidally heated body

The moon is similar to earth but orbits around a gas giant, the sun has ended its life cycle and so the only energy received on the moon comes from tidal interactions heating its core. On earth and ...
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5answers
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Building an interstellar starship during transit

Would it be feasible to have an interstellar vessel be constructed in flight after smaller sections are boosted up to speed? The idea here is about using laser sails which would be easier to use with ...
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1answer
96 views

Stability in Lowering a Space Elevator

First question on stack exchange I’ve been lurking and learning for years and finally decided to pose a question for a novel I’m working on. Given the appropriate advances in material sciences and ...
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1answer
175 views

Can an animal develop a facial disk through muscle and bone alone?

In some birds especially owls, we can observe a structure called facial disk, which is mainly composed of feathers and helps to direct sound to their ears. While being more common in owls, adding up ...
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3answers
160 views

Evolution of flying skulls?

We may all have some familiarity with winged skulls - from Avenged Sevenfold's album covers to bikie shirts. However, for my science-fiction/horror story, I am curious about how these creatures would ...
6
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1answer
92 views

What would be the an avarage and/or realistic population density be for an medieval based city?

I'm currently building a world for a medieval based D&D campaign (i know super original) and I'm trying to make my cities as realistic as i can. Right now I'm planning on making a city in the ...
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1answer
127 views

How big does a pelican type creature need to be to carry a grown up human inside its mouth and still fly?

as the title, my question is how big a pelican like creature with its pouch mouth need to be in order to carry grown up human and still fly. since as far as i know hollow bone is to fragile for human ...
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1answer
85 views

Anatomically Correct Diclonius

The Diclonii are an evolutionary offshoot of modern homo sapiens from the Elfen Lied series. Most Diclonii can get distinguished from humans thanks to small bone and cartilage horns resembling cat ...
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3answers
108 views

Biology behind a monster that is able to remain invisible

This is a post-apocalyptic setting I'm working on. The world has been overrun by invisible monsters from another parallel universe. They can be heard and smelled, and they can form claw prints on the ...
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0answers
47 views

Titles and honorifics for a female-only, quasi-Islamic society [closed]

I'm trying to write a female-only, quasi-Islamic society. By society, I mean something between a Masonic lodge and an order of chivalry. The closest thing, in fiction, to what I'm aiming for is ...
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3answers
119 views

Does the humanoid body plan necessitate sapience to be viable? [closed]

in most science-fiction stories that include alien races, said aliens have a roughly humanoid appearance (being an erect bipeds). now while it's likely that the vast majority of sapient life (beings ...
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1answer
155 views

If I removed the gold from my phone [closed]

So I have a rather short question: what would happen if all the gold disappeared from my phone? Now, I know, most likely it would just stop working. But precisely, what would we see first? Would ...
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0answers
54 views

With dunkle-like Jaws, how long could the neck be?

The Apex predator of the Sea of Grass biome from planet Andromeda is mostly bipedal, but capable of facultative quadrupedalism, it has long limbs, powerful claws on its hands and is roughly the size ...
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10answers
4k views

Could Byzantines bridge a deep strait separating 2 continents?

In my book series, there are 2 main continents on the planet Aurea: Koumaris and Louzi. There is a spot here where the 2 continents come very close to touching, separated only by about 2,500 feet (760 ...
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0answers
69 views

Triceratops cart load

I'm designing a world where people and dinosaurs exist at the same time. I'm making it realistic (in the sense that it is more like Jurassic Park and not like The Flintstones). Supposing you could ...
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4answers
945 views

is it possible for creature to have loose jaw like snake but also has enough bite strength to bit off big chunk like most predator or human do?

I want to create a glutton creature that can open its mouth wider than the prey item like snakes do, but also can bite through that big hard object and even chew it; this creature doesn't swallow prey ...
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2answers
122 views

Can Magic Enhance the use of 19th Century Firearms?

The setting is a post-apocalyptic Earth, a few hundred years after a "world-ending" war. What remains of humanity is beginning to emerge from Fallout-esque shelters, but (more importantly) magic ...
6
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1answer
358 views

How practical would war boars be?

along with horses Orcs have also bred giant Boars which they ride it battle. these war boars have been bred to be the size of Entelodont with larger tusks and I was wondering in what field might ...
4
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3answers
172 views

Would it be logical for races to have their own colonies to preserve their cultures post-Apocalypse?

In my story, Earth was destroyed and about 19 million survive (from races and cultures from all over the world) and go to a new planet as their new home. At the start of my Sci-fi book, it's set 125 ...
27
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12answers
5k views

Without modern electronics, how could you determine your longitude, latitude, and altitude while lost deep underground?

Brief setting notes: it's a "basically earth" type situation, a spinning ball of rock in space with the same size and gravity and atmosphere and magnetic fields and everything else. The main ...
6
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1answer
90 views

Temple fell down sinkhole in mining area, toxic gases

My temple was built near a kaolin surface mine, which is itself topping an old deep mine (where they used to mine radioactive metals, rare earths and possibly other miscellaneous, if need be). This ...
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2answers
77 views

What is the most effective location for spinnerets in a vertebrate?

In the large pillar forests of planet x, a group of vertebrates, in order to hunt down the fast climbing creatures that inhabit their habitat, rather than developing speed as well, went on another ...
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6answers
2k views

2 elbowed forelimbs: advantageous or detrimental?

On plain Pilar forest biome of planet X, you have mostly 3 types of vertebrates: those who burrow under the ground those who run through the widely separated trees those who live above ground level, ...
6
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2answers
110 views

Feasibility of Hydrogen-Oxygen Atmosphere

My augmented society of humans have managed to engineer their power-hungry cyborg components to run on a hydrogen fusion reactor. Whilst they have so far managed to fuel it by drinking lots of water, ...
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2answers
126 views

Plausible reasons for a whole planet to have a temperate oceanic climate?

In my book series, I’m worldbuilding a planet whose culture is based on Celtic mythology and history, and in order to be consistent with real life I feel like the whole planet’s environment needs to ...
4
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2answers
72 views

Effect of high frequency of impact events on geography,climate, and environment

Earth sized planet in the goldilocks zone. Similar mineral composition and surface water. Photosynthetic life evolves and thrives on land and sea. Atmosphere and climate comparable to the beginning ...
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9answers
5k views

Alice has been shrunk! Will she notice?

Situation: Someone (let's call him Bob) is playing games with someone else (let's call her Alice). Bob used his shrink ray to reduce Alice in size by about 40% (for the purpose of this question, don'...
3
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13answers
4k views

Why would a very advanced Transhumanist Civilization ever need to have a military or wage wars?

My Setting First of all, let's define what a very advanced transhumanist civilization is in my setting: 1- Post-scarcity civilization (Kardashev level II or even III) where everyone has abundance in ...
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6answers
2k views

Why would the offspring of a clone not suffer from a degenerative illness?

I, Rey Skywalker, am officially the greatest Jedi in existence. I successfully took down the remnants of the empire single-handedly, defeated my arch-enemy Kylo Ren, and killed Sheev Palpatine, the ...
2
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4answers
265 views

Why would humans still fight and battle, even after nuclear war just destroyed society?

In my world, a nuclear war back in the 60’s wiped out about 3/4ths of humanity and a lot of the major cities. Civilization was reduced to pitiful outposts, or secluded in underground shelters until it ...
0
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1answer
90 views

Can a flying predator have slit-like pupils?

In an alien world, much alike earth, exists a theropod-like aerial predator, slightly larger than a lion, which also hunts on land. The creature's eyes occupy around 30% of its face, for hunting both ...
4
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1answer
94 views

Could my fungus exist naturally?

My fungus starts out as an extremely small spore, this small spore will bury and implant itself near the spinal cord and cerebellum, and will then secrete an enzyme that hijacks and later puts it in ...
2
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0answers
59 views

How much energy would be needed for a sentient plant species

Let’s say humanity is a type 1 civilization, ( essentially a civilization that can control there entire planet and harness its energy ), now let’s also say humanity wants to make an intelligent ...
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9answers
4k views

“Realistic” cowboy shootout strategy

Welcome to the West. Cliche cowboys go around doing cowboy things like lassoing indians, riding horses, and having duels. Naturally, these duels are of great importance to the gunslingers. Whether the ...
6
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3answers
561 views

Through Uterus/Reproductive System

Early life, and many modern organisms have what we call 'blind guts'. Food enters and exits via the same opening. However, that is inefficient and has been widely replaced with 'through guts'. Food ...
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2answers
74 views

Feasibilty of binary planet having life

So far I've designed two planets, and would like for them to orbit each other at a distance of roughly 1.25 million km (both planets would easily stay in the habitable zone), the smaller being tidally ...
2
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0answers
94 views

If humans had evolved with “natural forcefields”, would blunt-trauma weapons replace spears as dominant battlefield weapons? [closed]

EDIT: I now realize that asking for a logical extrapolation from the consequences of auras upon ancient, post-classical, and modern warfare was far too broad considering warfare in these periods ...
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3answers
125 views

Semi-FTL quantum communications

I'm trying to come up with idea's that have some plausibility of sending information FTL. So we can entangle particles together. When you measure them you influence them. If you measure one up the ...
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0answers
41 views

The 10,000 year old book [duplicate]

Paper has been a standard basically since its invention; we know, today, of books that lasted for centuries in excellent conditions, especially if properly maintained. Unfortunately this is not enough ...
6
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3answers
243 views

Could Octopuses convergently evolve sapience?

Now octopuses are quite smart already capable of camouflage and puzzle solving. given this I was wondering whether Octopuses could Convergently evolve sapience (human level intelligence) and what ...

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