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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.

5
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3answers
649 views

Giant Velvet Worm

Would it be possible to have a giant velvet worm? Not huge but big, like the size of a small dog, 20 kilograms?
-2
votes
3answers
139 views

How to cross the Earth's core in a straight line

My superhero generates a force field which lets him and his equipment sustain the extreme conditions found inside the Earth. He decides to travel from the Geographic North Pole to the Geographic South ...
3
votes
3answers
151 views

Can A Theia-Like Object Make Earth Richer?

Let's start with a little backstory--our planet underwent an impact-coalescence cycle only once, 4.5 billion years ago, when a Mars-sized object named Theia destroyed the infant Earth in a glancing ...
4
votes
2answers
96 views

All the Radioactive Metals Inside Earth's Core--How Would They Affect Convection?

In relation to a recent question of mine, this alternate Earth still has its core consisting of 84% iron, but the other 16% contains the greatest concentrations of all known species of heavy metals (...
7
votes
2answers
251 views

Are there currents in space? Space flotsam?

You know how there are some beaches in the world where tons of sea glass or other random sea trash washes up, just because the currents and the shape of the land naturally collects it all there? I was ...
10
votes
7answers
2k views

How can my creature keep sand out of its mouth?

Excerpt from the great Dalian Holy Book ”The Dark God, the Tayan, was first formed when the gods above sent a curse down to the surface, to remind our people of our dependence on our gods. If the ...
3
votes
4answers
272 views

Is it possible for a naturally occuring star system to have 120 planets?

In my book series (link here), there is a star system at the northern edge of the galaxy called the Ryu system. I am planning for this star system to be huge, encompassing 120 planets. The vast ...
4
votes
3answers
193 views

Could Ice Age vikings practice large-scale domestication?

So in this book series I'm writing (link here if you want to know more about that), there is this planet called Ryu 108. The planet is made up of two continents. The southern continent is heavily ...
10
votes
5answers
264 views

Can corals build faster than the ocean takes away?

Setting In a tropical shore, where a great river empties into the sea, there is a zone of very high tides. The water level rises and falls by meters every day. In this challenging ecosystem, ...
3
votes
0answers
122 views

What skills do you need on Saturn? [closed]

Background It is the near future. After a major world war and limited nuclear exchange, the nations of Earth have consolidated into a few blocs. The threat of further war and the cumulative damage to ...
29
votes
5answers
4k views

How could the Mafia retain its power in New York into the new century?

A mutant who sees multiple futures has predicted that the world will be invaded by aliens. Every future ends disastrously for the human race with us being wiped out. The only one in which we survive ...
11
votes
8answers
1k views

What would cause termites to be the dominant herbivores on a savanna?

Problem statement I am building a world where the flora and fauna is based on that of Gondwana, the lost supercontinent that consisted of South America, Africa, Madagascar, India, Australia and ...
15
votes
13answers
5k views

How can someone that has lived for hundreds of years avoid suspicion in the modern world? [closed]

If someone has lived say two or three hundred plus years and has attempted to remain a part of normal human society without arousing suspicion, how easy would this be? Would it be difficult for ...
36
votes
15answers
14k views

Could a really fast man catch a bullet?

Let's say that a character moves much faster (>100 x) than a bullet. If he is shot at, could he theoretically catch the bullet (and put it in his pocket) ? What happens when he touches the bullet, ...
0
votes
2answers
103 views

What short term ramifications would i have to take into consideration when rebuilding society after an extinction level event? [duplicate]

My name is drax blofeld, and I am one of the most intelligent and wisest human beings born on this earth. In my infinite wisdom, I have determined that humanity has become too decadent and corrupt, ...
10
votes
10answers
3k views

Paper from human skin

I'm writing a story about a people that lives in a very cold, icy environment. Their technological level of advancement ranges from stone age to dark ages in different areas. I'd like them to record ...
5
votes
6answers
331 views

How Could A Very Complex Language Arise?

Many efforts have been made to construct simpler languages that are easier to learn (e.g. Esperanto), and relatively simple language arise naturally in the form of pidgins and creoles, when people ...
-5
votes
2answers
132 views

Plausible explanation why my grandpa isn't famous [closed]

My grandpa is smart. Like, really smart. He's (self described) the smartest man in the universe. But seriously, he creates Turing-test level AI robots just to pass him the butter. He makes stuff that ...
3
votes
5answers
361 views

Avian Crocodylomorph

Today, dinosaurs, alligators, crocodiles, gharials and caimen are all that remains of a special group of reptiles called the archosaurs. Recently, it has been accepted by the public that birds did ...
1
vote
4answers
150 views

Can a character raise a T-Rex from an egg and have it be tame?

So I'm writing a book series called The Weasel Sagas (link here if you want to know more about that). Anyway, there's this character named Santa Muerte (her birth name is Beth but that's a story for ...
4
votes
5answers
193 views

A planetary region with no night and no tidal locking?

Without tidal locking, would it be possible to have a planet with a region roughly the shape and size of the USA and Canada in which it is always "day"? (By day I mean at least as bright as a clear ...
6
votes
6answers
512 views

How can my Tayan creature excrete waste, whilst buried underground?

Beneath the sands of the Planet Dalia, their lives an abominable creature, a creature that eats beings whole and slowly, slowly digests them for years at a time. This creature is...The Tayan. ...
6
votes
5answers
848 views

Could a Mosasaurus destroy a ship?

Would a fictional relative of a Mosasaurus, the fictional one being a tad bit bigger, be capable of destroying a ship? For the purposes of this question, assume a wooden ship of comparable size and ...
1
vote
2answers
144 views

A sudden decrease of gravity on Earth [closed]

I have an idea about a story where gravity suddenly changed and became about 10-20% weaker (lower). Humanity now needs to adapt to the new situation. What disasters and catastrophes would this sudden ...
-2
votes
4answers
136 views

Could the Romans have Invented Graphene? [closed]

This scenario is inspired by this article. Long ago, it was thought that this super-cool, extra strong material called carbon nanotubes is a recent invention. After all, what ancient culture could ...
9
votes
7answers
2k views

Could an astronaut in a near-future space ship survive transit through our asteroid belt?

In the near future we may find cargo ships fleeing space pirates! Given that... It's a small cargo ship carrying 10 metric tons of wheat (cargo volume, approximately 13 m3). Total volume: 100 m3. ...
29
votes
30answers
6k views

If antimatter were common starship fuel, what could prevent it from being commonly weaponized? [duplicate]

My scenario involves a high sci-fi setting, where starships are readily available to civilians with sufficient qualifications and money. Most civilians would not be fueling ships with antimatter ...
5
votes
1answer
188 views

Where should I place mountains and deserts in this generated map?

Thanks for all the comments and I've re-edited the question: All nature settings(radius of planet, etc) are similar to the real world earth except the continent layout. I used Mogensen Planet ...
3
votes
5answers
387 views

From a software testing perspective, what quality-analysis tests would justify using a single world-war simulation?

The Perspective: My story is told from the perspective of the simulated AI. In other words, The AI's world is influenced by the reason the developers chose to use a world-spanning war to test the ...
11
votes
12answers
3k views

Country at constant war - Is a permanent powerful economy possible?

In the fantasy novel I am writing, there is a world-wide war going on. The war spans several continents and has many fronts, but the actual fighting is very similar to that of WWI - mostly waiting in ...
2
votes
2answers
124 views

How would you explain the process of reverie in elves?

In dungeons and dragons, elves rest through a process called reverie which is similar to human sleep. They sit cross legged and go into a meditative state. Muscles relax, breathing slows, and the ...
6
votes
8answers
310 views

Is it possible to keep secret such a technological discovery?

Welcome to my fantasy, late-medieval world. For the sake of the question, we can divide it up in two major continents: Continent A is considered the birthplace of my humans and features a solid ...
4
votes
1answer
159 views

Would this simplex ternary system be stable?

I'm trying to make a trinary star system but I'm not sure how it would work. The primary star is an M0Ve star (red dwarf flare star). The orbits of the other two stars are slightly more complicated. ...
3
votes
7answers
325 views

Strategy to capture a TRex alive?

For context : A squad hunters has been assigned to capture a Tyrannosaurus Rex for the grand opening of a new amazing zoo. They will be sent to a location in Montana 66 million years ago using a time ...
6
votes
23answers
5k views

Why would a society of witches choose to have more boys than girls? [closed]

In my story's world, witchcraft is a respected institution, with the most powerful practitioners being at the top echelons of society. Due to this, society traces its lineage through matrilineal lines....
3
votes
3answers
118 views

Half gas half rocky planet

I am envisioning a very big planet that at the equator Is mostly composed of gases. Further away from the equator a crusts forms of matter - rocks that then also contains an ocean. I am still ...
22
votes
21answers
6k views

Why would god conduct multiple raptures if he depends on human beings for worship?

A being known as Dea is the creator of all things in the mortal world. He created human beings as living batteries in order to fuel him and give him power. Dea feeds off of human worship, which it ...
2
votes
2answers
108 views

A Raptorial Parrot

This scenario is based on the kea, the world's only alpine parrot. Even though it eats plants like other parrots, it also eats meat, and therefore could be New Zealand's answer to the smaller diurnal ...
9
votes
4answers
2k views

Can I have wind turbines on my base?

Background A colony of humans has settled on a remote planet where there is little to no sunlight, but there is a plentiful amount of earth metals. E.g.- Iron, aluminium, Titanium, etc. There are ...
7
votes
2answers
153 views

Is the concept of my flying carpet possible?

My planet is tidally locked to its sun. It has a slightly thicker atmosphere than Earth. Over the planet’s sun-side surface, there would be no wind because that area is in the middle of a big cyclone/...
6
votes
3answers
224 views

What would it take for a plant to produce electric shocks?

I'm designing an alien plant soecies that has evolved to produce electric shocks, as a way to keep insects away from it. My question is, how would it produce electricity in the first place? Also, ...
-3
votes
2answers
151 views

On what conditions would an alien's civilization be completely peacefull? [closed]

I have been asking numerous questions about alien civilizations when it comes to lacking things like greed, money or violence. The reason I'm doing this is because I'm designing an alien species which ...
67
votes
11answers
12k views

Anatomically correct “XKCDius lethalissimus”

Inspired by today's XKCD comic How could a creature, momentarily called XKCDius lethalissimus, evolve to have the following features: Be radioactive (intended as more radioactive than the ...
8
votes
13answers
3k views

Possibility of using large asteroid as planetary attack weapon

I am writing a story where the human race is divided into two groups one called Martians (they left to live on Mars) and the other Earthlings (who stayed on Earth). The Martians want to destroy Earth ...
3
votes
3answers
285 views

I have made a design for creating artificial gravity on low gravity worlds for my world, does it work?

So I have been thinking about making a building on the moon that would create a 1g environment for the people inside without making the structure to inconvenient to attempt to get into and this is my ...
13
votes
4answers
344 views

Can the Mongols conquer France?

Background In the mid 13th century, France was without a doubt the richest land of the West. Inside its modern borders there were perhaps 18 million people, and maybe more, at that time perhaps 1/5 ...
15
votes
2answers
230 views

A blue flamestorm blasting through a system of big yellow caves?

What I "want": My fantasy world has lots of volcanos. Deep under the surface there is a root-like form of life predominant. It grows in big bundles and searches for important minerals, gases, fluids, ...
8
votes
9answers
7k views

Using fire as currency?

Long ago, modern humans died off. Only a few people remained, and they made all sorts of GMO plants, like moss that grows extremely quickly and can be dried into flour. Houses are made out of wood......
8
votes
2answers
102 views

What practical use would turning Herschel crater (Mimas) into a massive satellite dish have?

Saturn and it's moons, minus a few rogue colonies, are under the control of the Saturnine Syndicate. Long have they wanted to turn Mimas into a communication, technology, and data hub. But I've run ...
33
votes
10answers
7k views

In modern day combat, what would warrant singing during battle?

Cicad the singer is having a downtime in his career. Over the millennia, Cicad sang anywhere from royal courts to farmers' cottages and have been rewarded with many, many hand-claps. But to keep ...