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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5
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2answers
59 views

Are these alternate "ears" realistic?

In my world, creatures evolved in the twilight zone of a tidally locked planet. Naturally, because there is little light, creatures either increased their light sensitivity or turned to other senses, ...
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1answer
33 views

Lava consistency under the sea? [duplicate]

I'm curious. Is it possible for lava to maintain it's molten character on the sea floor for long periods of time? I'm talking about a river of lava on the sea bed. Obviously this is really stretching ...
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0answers
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Would the seasons on this solar system be too extreme for Earth life to thrive?

In this artificial galaxy, there is a trinary of quasar stars at the center, each one 1.5 trillion times as massive and 995 trillion times as bright as our sun, each one having its own ring of mirrors,...
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5answers
99 views

How would modern religions react to magic [closed]

So I have an idea for a scenario in which all at once humans across the world are able to do at least some magic. This event is entirely random so a Christian pastor has the same chances of gaining ...
6
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3answers
105 views

Solar-powered monster charging stations?

Lets assume we have a super advanced intelligent, possibly magical, Entity that wants to enroll Earth in a fun episode of monster invasion by making a bunch of demons and releasing them on Earth. The ...
12
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8answers
3k views

Is a wood-core sword the best use of the metal?

I am currently reading the Steerswoman series by Rosemary Kirstein, and the second book introduces us to a unique weapon used by Outskirter tribes who have very little access to metal. Rather than ...
12
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10answers
5k views

Is a world where all creatures are blue possible?

Blue is a rare color in nature. If you think of one random organism, there's a high chance that the organism won't be blue. That's why some filmmakers use "blue-screens." But what if there ...
12
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9answers
2k views

Would a somewhat benign "vampiric" virus be doomed to infect everyone?

In one of the books of the The Witcher series Geralt has been told by a vampire (Regis, if I recall) that it was not true that vampirism could be spread by bite. He elaborated that the whole idea was ...
2
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1answer
76 views

Mechanical-electric firearm ignition

For some time I've been thinking upon the concept of a firearm that uses a mechanical system to generate an electrical current for use in a electrically ignited firearm without the hassle of batteries....
3
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1answer
89 views

Lizalfos: Biologically Feasible?

I was recently playing Legend of Zelda: Breath of the Wild and became fascinated by whether something like Lizalfos could develop, given the right conditions. The idea is to create a realistic version ...
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1answer
85 views

Visible effects of most satellites deorbiting at once

For a story I am writing, the Earth gets ejected from the solar system. In one of my previous questions I asked if we get to keep the Moon - seems like we would not only lose her, we would lose all ...
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11answers
3k views

Where does a virtual being's data move in the physical world whether in a supercomputer or in the internet?

The virtual world is nothing new in science fiction and has had quite a few uses considering it's a fairly recent concept. Since the virtual realm isn't constrained by understanding of physics, it ...
4
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1answer
241 views

Ups and Downs of being a 7ft+ (2.13 m) female [closed]

I’ve read about people of certain heights having health and lifestly issues: I've read some have back problems; one guy died from a foot infection e couldn’t feel; additionally, being taller comes ...
6
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1answer
236 views

Consequences of having a device that can transform heat back to stored energy in a limited way? [closed]

My setting uses reactors that work on a fictional gas-like inert substance that can safely store an impossibly high amount of energy in itself (breaking the e=mc^2 equation and causing Einstein to ...
16
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11answers
5k views

What would spiral-shaped lungs be good for?

So I’m sitting here populating my alien world with critters to run around, eat each other and do critter stuff (as is the custom). At some point a thought came over me that their organs should be ...
4
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2answers
362 views

Feasibility of the Ascendia System?

Some of the events in a story I'm thinking of have occur on a planet called Ascendia. Due to the world's backstory, it has several unusual traits. Despite orbiting around a hot (roughly large F/small ...
0
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0answers
14 views

Fear of wild animals on a Island while I am sleeping in tent alone at night [migrated]

I have been camping solo at various places(Hills, riverside) for 3 years of my life. I have also seen various techniques online to survive alone on the Island. I often wonder how do you deal with wild ...
3
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7answers
2k views

Can a group of assassins help win a war? [closed]

The Icratic empire and the Noctan Empire, both powerful empires, are fighting a war. The Noctan Empire has physically well-built soldiers that are well suited to the terrain they are fighting in, but ...
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6answers
3k views

What circumstances would necessitate rib cage made of hexagons?

I ask this because I’ve been looking at alien designs for inspiration and on rare occasions found peculiar bone structures. The hexagonal rib cage in particular intrigues me. We know for one that ...
4
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2answers
140 views

Will autocannon armed "soldiers" be useful in combat?

I'm creating a magic system where extremely rare humans with psychic talents could be trained to channel their powers into something similar to firing a 20 mm autocannon. Would such large calibers ...
1
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1answer
179 views

Remote listening device inside human ear and powered by the body

Some related (but not the same) questions: Listening (eavesdropping) device that can be put into victim's ear? (which is closed because of the need to focus) Microphone implanted in and powered by ...
3
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2answers
121 views

Do my colonists stand a chance? A world of super-materials

When the first explorers returned from the New World, it was with terror in their eyes. Violent shores, a jungle with trees taller than hills, and unspeakable monsters behind every towering frond - ...
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7answers
3k views

How efficient would pumping water uphill be using hydropower?

How efficient would hydropower be at pumping water upward? Waterwheels are the cornerstone of unmanned power and are basically gravity powered (solar too if you count the water cycle,) which is very ...
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8answers
5k views

Is it possible to learn a language entirely by observation?

It is the age of exploration. Intrepid European colonists have come to settle the Americas amidst a storm of interest over the wondrous materials that may be found in the New World. Unfortunately for ...
0
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3answers
191 views

Is a Habitable Planet With Three Suns and a Moon Realistic?

On this planet, which is mostly arid and dominated by large deserts and expansive steppes and savannahs, the sun rises once, and then two more times in the morning, and throughout the night an ...
3
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1answer
57 views

What is a good rate of growth of size and numbers of creatures that start with a microorganism?

I am thinking of a story where a meteor carrying a microorganism lands into some hot spring mountain caverns that between a city and a desert and evolves to be able to able to take DNA samples from ...
6
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4answers
686 views

Minimum staff size for a modern day small town school

The world for my current work in progress is a fiction American small town with about 500 residents and 100 kids, located in geographically isolated location which makes busing to larger nearby towns ...
4
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1answer
217 views

How easily can one single slap kill a person?

On the left side we have Emperor Kaht, 23 years old, 67.5 kilograms of weight with a height of 178 centimetres. On the right side, the northern kingdom's hero, a man of which fame stomps that of ...
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5answers
681 views

If we built spaceships on the Moon, would we have more fuel to burn for trip to Mars [closed]

I read somewhere that a lot of the fuel used for Earth-to-Mars trips is burned up in the first few hours -- leaving Earth's gravity well. Working on the premise that it takes a whole lot of fuel to ...
5
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4answers
421 views

Could a "vampire restaurant" be logistically feasible?

There's this reasonably common concept in vampire fiction when the vampires are open members of society: oftentimes there are these businesses where vampires pay to drink blood straight from humans' ...
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8answers
2k views

Is it possible to democratically handle the immaterium?

I'm creating a world inspired by Immaterium from warhammer 40K. TL/DR There is an alternate dimension which is a realm of chaos, which enables lot of goodies in the real world, like faster than light ...
19
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5answers
3k views

Are hydrocarbons viable foods for larger organisms?

There are some oil consuming bacteria which can break down hydrocarbons in the ocean. Since these tend to store a lot of energy, I was wondering whether it's possible for larger organisms to take ...
4
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1answer
113 views

Domestic animals for Elves and their usefulness to them [closed]

At the moment I'm currently thinking of the types of animals that my fantasy Elves would use for various purposes. I wanted to know if the ones I've come up with would be plausible and if there is ...
11
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7answers
932 views

How do Demigryphons hunt?

Demigryphon usually depicted as a quadrupedal hybrid creature with a body of a Big Cat and a head of a Bird of Prey. Most Big Cats from which it derives its' body plan stalk and ambush their prey - ...
4
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2answers
105 views

Scientifically Correct Alternative Dragon Breath [closed]

Besides fire, would it be possible for a dragon to breathe other things like lightning, ice, poison, steam, "life", etc...? I think it's kind of unlikely for a dragon to release lightning ...
3
votes
5answers
348 views

Reality Check: Medieval economics - could peasants ban rent?

Question: Is there any economic reason they would be unable to do this / some unforeseen way it would ultimately come back to bite them? Ultimately they want to let their peasants live rent-free in ...
2
votes
1answer
81 views

How large of a feather "parachute" would these flightless birds need to fall safely?

Flight is a very demanding task for avians both physically and anatomically. Everything about a birds anatomy is designed around flight and small injuries can ground a bird for good. Lot's of things ...
3
votes
1answer
97 views

Dragon sailing Airship Part II: Room Temp Superconductor Anti-Ballast

This is the second part of a two-part question. This part uses third-party worlds to illustrate a couple of points, but it is not in any way about them, therefore this question is not off-topic. So ...
3
votes
1answer
107 views

Would gravity be stronger or weaker on different sides of a dual planet?

If you had two similar sized planets that were tidally locked to each other, would gravity change depending on whether you were closer to the sister-world? Assuming they were quite close.
5
votes
2answers
171 views

Square Cube Law and The Titan Whale

Alright, whale first, question after. The Titan Whale is a massive cetacean that superficially resembles a blue whale with a few notable differences. The Titan has four fins, (not including the ...
0
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1answer
70 views

Dragon Sailing Airship Part I: Fire Air Balloon

This is the first part of a two-part question. This question is actually related to a question I asked earlier about Ancient Temple Booby Traps Designed for Dragons (link here Ancient temple booby ...
2
votes
1answer
242 views

Effects of 75 degrees (Celcius) on human body

Question: How long can a person survive before effects of heat stroke start to affect them. Situation. A person is in a room that is heated up to 75 C (167 F). Let's assume person is naked (so we don'...
5
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3answers
963 views

Double planet climate

How far would 2 tidally-locked (to eachother) planets need to be from their blue star host to be habitable, but have a cold-weather climate similar to our Ice Age?
4
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9answers
3k views

Making Dual Wielding Possible-And Effective

Self-explanatory title, right? No? Dual wielding is a common theme in fiction, but according to research is way too impractical; two weapons get in the way of each other, striking with both blades is ...
3
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1answer
81 views

Cooling My Giant Dragon

So I have a giant nuclear powered dragon. This beast is about 2 miles long with an equal wingspan and often spends the majority of its time asleep, passively absorbing nutrients from the air, water, ...
7
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5answers
1k views

Fire mage vs. magnesium dust attack

The probable results of the below (in my imagination) would be a toss-up between asphyxiation, blindness, and/or molten magnesium in uncomfortable places but I'm not entirely sure. So given this ...
3
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3answers
178 views

How could a vampire acquire specifically human blood without killing anyone?

I've seen a similar question posted here, but my vampires require specifically human blood. Anything other than human blood or water is disgusting and indigestible to them. Some more notes: Drinking ...
5
votes
2answers
199 views

How frequently can I pound my civilization with rocks and expect it to rebuild between?

I have a civilization living on floating reefs on a pure water world (no land other than the reefs). There are creatures on the planet that extract relatively pure metals from the water to use ...
2
votes
4answers
184 views

What effect would large tree eating animals have on the ecosystem? Would trees dissapear?

While wood is made up of the same carbohydrates called cellulose, wood is held together by a complex molecule called lignin. This makes wood tough and hard to digest as part of the cellulose remains ...
5
votes
1answer
84 views

Will my cyber-kraken fry itself with these electromagnetic powers?

I'm currently building a kraken for one of my worlds and wanted it to be a threat to my more tech-savvy protagonists. So, I want to give it some cybernetics. In particular, I want it to be able to ...

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