Questions tagged [humans]

For questions about humans as we know them or slightly changed, their physiology, psychology, politics, society and goals.

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8 votes
8 answers
2k views

How to get the Lilim to breed true?

On my worlds of Earth, Ruquelis and Ersutiabu, there are three sexes relevant to this question, Men (XY male), Women (XX female) and Lilim (LX female), where X, Y and L are sex chromosomes. Lilim ...
  • 46.3k
11 votes
7 answers
3k views

Why would a society be matriarchal but patrilinear?

In my universe, there is a species from the Homo genus named Homo haematophagus (which means hematophagous human) (they are still humans, just not Homo sapiens) (their scientific name is a reference ...
11 votes
8 answers
5k views

How to prevent humans from being killed by alien diseases?

Humans build big rockets and fly generation ships to extrasolar planets to settle. There’s already sentient alien life on that planet, but the humans has none of the immunizations and natural ...
1 vote
1 answer
122 views

Can knowingly and willingly murdering someone interfere with a women's menstural cycle? [closed]

On Peacemaker, Harcourt, one of the characters, mentions that when she first killed someone, her periods stopped happening for quite a bit. My question is this: Just how realistic is that? ...
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1 vote
3 answers
188 views

How much would a 3 foot tall person weigh [closed]

I'm trying to worldbuild and one of my creatures is a 3 foot tall humanoid and I have no idea what they should weigh. Does anyone know how much they would weigh or a math equation I could use to ...
3 votes
1 answer
90 views

Physiological consequences of being a brain in a jar plugged into a robot body [duplicate]

In an alterante universe where Nazi Germany conquered the world, an unfortunate soul has ended up like Cliff Steele from Doom Patrol; his brain has been removed from its original body by a mad nazi ...
  • 1,413
2 votes
2 answers
114 views

What would modern color wheels look like if the human eye saw fewer/different spectral colors?

The typical human eye can see wavelengths between 350nm and 750nm. In 1666, Isaac Newton used a triangular prism to split a beam of white into a rainbow and then define the first color wheel. Fast-...
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2 votes
3 answers
123 views

Is it possible for a metal like the Skarilium of my works to exist naturally while also being obtainable for humans in the near future?

In some of the universes featured in my works, a material known as Skarilium exists. This material is used by humanity, in a universe where we’ve successfully colonized the majority of Mars and are in ...
2 votes
3 answers
390 views

Would it be plausible to have someone who grew cancers to replace all his organs to achieve a pseudo-immortality?

Since cancers are immortal, as long as they are ‘fed’, could a bunch of controlled cancers be used to create all the organs and bones needed to support a human and prevent death by old-age? That way, ...
-1 votes
1 answer
133 views

A genetic disease that is characterised by both gigantism and intellectual disability [closed]

In an Of Mice and Men parody I want to write, Of Rats and Women, there is a 30 years old woman named Léonie Petit (her surname is ironic, because petit is a French adjective that means small/little/...
1 vote
2 answers
123 views

What would the recovery period for a five year coma look like? [closed]

So, I've been kicking around a sort-of "return from another world" idea for a bit now. Basically, the MC gets the crap kicked out of him and ends up in a deep coma with very little brain ...
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-2 votes
3 answers
197 views

Superbabies can walk right from birth. How many times are they stronger than a normal baby?

XXIII century genetic engineering creates superbabies that can walk straight out of the LDR (labor, delivery, and recovery) room right after being born. These superbabies are enhanced by a set integer ...
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6 votes
8 answers
1k views

Are there plausible ways a spacefaring society could develop along feudal lines? [closed]

There are works in science fiction (the Dune saga probably being the most famous of them) where in the future, a space-faring human society has somehow, instead of being a republic (at least in name, ...
35 votes
6 answers
6k views

What are the effects of making a woman as light as a duck? [closed]

With a pinch of handwavium, Clarabelle the witch causes an accident. She became permanently as heavy as an ordinary duck, while her body remained the same. Her density was forever altered. She is five ...
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1 vote
3 answers
123 views

Why would all drugs be legalised? [closed]

In my world, there is a species from the Homo genus named Homo magicus. They are my wizards (or sorcerers, if you want). Traditionally, magical humans/wizards/sorcerers are an EXTREMELY religious race:...
3 votes
2 answers
186 views

Physical consequences of being a brain in a jar plugged into a robot body [closed]

Some unfortunate soul has ended up like Cliff Steele from Doom Patrol; his brain has been removed from its original body, suspended in a vat of life-sustaining liquid, and wired up to a new, robotic ...
  • 1,413
0 votes
1 answer
181 views

Can anatomically modern human siblings have three decades of age gap? [closed]

In my story titled La Maison Sapiens, there is a HUGE nuclear family composed of the father, the mother, and their seventeen biological children. To be exact, the dyadic cisgender man and the dyadic ...
-3 votes
2 answers
140 views

Will this "miraculous" change have a long-term effect on technology? [closed]

In a fictional world, the following changes suddenly happen to all humans (and future newborns) for no apparent reason: Their temper becomes better. They now enjoy socializing with each other more ...
9 votes
5 answers
3k views

What is the best ways of cleaning/bathing inside an astronaut suit?

Context: In this sci-fi scenario/story, they don't use an space walk Astronaut suit (because of costs), but a crappier version of an astronaut suit, cheaper and mass produced. Due to the ...
  • 401
-1 votes
1 answer
125 views

How Dangerous is Unity? [closed]

No, I do not mean unity between other people. In one of the stories I came up with, people become "zombies" once an alien substance (Choromis) distributed unknowingly amongst the population ...
  • 13k
-4 votes
1 answer
121 views

A genetic disease that makes humans of any origin have epicanthic folds (slanted eyes) [closed]

I imagined for a future film, a 21 years old human of French nationality and citizenship named Thérèse Arielle Huguette Flavie Alexandre (Alexandre can be both a given name and a surname, in this case,...
0 votes
2 answers
176 views

A synthetical virus created by a racist [closed]

In my science-fiction story, there is a vile scientist that creates a synthetical virus, because he wants to kill all humans of British and Irish ancestry all over the world. This virus ONLY affects ...
10 votes
9 answers
2k views

Is it reasonable that a nation reject reincarnation?

On my world, a magical device known as a Reincarnation Anchor (RA) was invented. The effect of a RA is that any human who spends a significant portion of their life within sight range of a RA becomes ...
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7 votes
16 answers
3k views

Why And How Do My Mind Readers Keep Their Ability Secret

My first question so bear with me, also please tell me what I can do better (both about my question and about my way of asking it). In my parallel universe everything is a carbon copy of our universe, ...
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5 votes
9 answers
2k views

Why do people want to immigrate to North Korea? [closed]

In the alternate reality, no one escapes North Korea. In fact, no one wants to. On the contrary, people around the world want to immigrate to North Korea. North Korea is a non-democratic state ruled ...
6 votes
3 answers
346 views

Future therapy/treatment for veterans of near future/ further future mass casualty conflicts

The setting I am working on is near future in a sense and involves veterans dealing with the aftereffects and trauma of war. However, in this setting war is extremely deadly even if not always fatal. ...
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3 votes
1 answer
111 views

Why would a catarrhine species from the Homo genus be MUCH more likely to be colour blind than Homo sapiens?

In my story, there is a species of catarrhinian primate named demons (their scientific name is Homo demonus) (so there are still humans, just not Homo sapiens). They look like a mixture of Afro-...
3 votes
6 answers
262 views

Why travel to another system and populate two planets with genetically modified humans? [closed]

I'm trying to create the backstory for a world which has 2 planets populated with genetically modified humans, and 'normal' humans who live on space stations/domed habitats built on moons. I also need ...
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2 votes
2 answers
186 views

Would a grizzly bear be big/strong enough to ride?

I'm asking solely for the purpose of one possible scene in my story/WIP. Non-spoilery context: my characters become real-world animals, one of them becomes a grizzly bear. In a scene, I have him ...
30 votes
15 answers
8k views

Best Way to Style Ridiculously Long Hair (for magic purposes)

Okay, so for the story I am working on, I have a problem-or, rather, Serena the Shaman/Witch has a distinct problem. She has only one low-mana spell-Hydro Jet-and it deals low but consistent damage. ...
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7 votes
13 answers
1k views

What would still discourage my people from settling on this subcontinent?

Context: The inhabitants of my world, humans, live on a supercontinent divided into three subcontinents separated by seas. The supercontinent is located above the equator in what is roughly the size ...
0 votes
1 answer
72 views

What are some things that could destory humanity? [closed]

I trying to think of ideas for the destruction of humanity/civilization that are not the usual (nuclear war, extreme viral/deadly disease, global warming, overpopulation, etc). Something that would be ...
15 votes
12 answers
3k views

How could interspecies wrestling fights be fair?

In real life, there are weight classes in combat sports. In my world, there are sixteen species from the Homo genus: Anatomically modern humans (Homo sapiens); Marine humans/Merfolk (Homo maritimus); ...
0 votes
1 answer
209 views

A genetic disease that makes genetically and biologically male humans unable to grow facial hair (the opposite of hirsutism)

In a live-action musical film I want to direct, Le Président et Moi (which means "The President and I") (I want the film to have French as its original language), there is a character named ...
1 vote
3 answers
404 views

When given the option to win $1M or die with the press of a button, what known winning probability would cause the most deaths?

Let's say every person at this very moment gets the option to press a button that will either let them win a million dollars or die (painlessly). They all know what the probability of winning is, and ...
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2 votes
1 answer
159 views

What would a dead body look like after spending 20 minutes at 1500 PSI? [duplicate]

You always hear "crushed like a soda can," but I'm pretty sure that the body wouldn't be much smaller than normal. The person wouldn't be breathing, so nitrogen narcosis wouldn't be an issue....
1 vote
1 answer
141 views

Would a human with electric powers be able to use them to strengthen their muscles?

I heard that electrical stimulation can lead to a similar effect to working out, so I was wondering if someone who can create and finely control electricity would be able to increase their physical ...
4 votes
4 answers
846 views

Why would some species from the Homo genus be much more likely to be autistic than Homo sapiens?

In my world, there are three species from the Homo genus that make together a clade called "aquatic humans": merfolk (Homo maritimus) (their scientific name means "marine human"), ...
-7 votes
1 answer
102 views

Which factors determine the political system of the various species from the Homo genus? [closed]

In my universe, there are sixteen species from the Homo genus: anatomically modern humans, marine humans (merfolk), winged humans (angels), demons, ogres, giants, dwarfs, elves, orcs, gnomes, trolls, ...
5 votes
4 answers
809 views

Does it make sense for my "zombie" to drink blood?

I'm working on another arc for my story saga, and one of the characters is a "zombie". I'm putting "zombie" in quotations because he's actually the result of genetic ...
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-1 votes
3 answers
125 views

What kind of side-effects might stimulating the pain-sensitive nerves have?

In a sci-fi story I'm working on, a group of aliens utilizes a implanted device that induces incredible pain solely by stimulating the nervous system; specifically, the nerves that tell you you're in ...
  • 1,413
8 votes
4 answers
245 views

How can I bypass Bergmann's rule in cold weather populations of humans?

I am working on a setting with a large native population of humans who live in a year-round freezing environment, somewhat akin to the real world Antarctic. These humans should be as biologically ...
11 votes
7 answers
2k views

Evacuating earth in favor of a off-world habitat: Just how many people can be saved?

In 2024, NASA detects a pair of planetoids, each the size of the earth's moon, careening towards our solar system. The good news is that they're set to enter earth's orbit without any collisions (how ...
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4 votes
2 answers
360 views

How much could humans change in the span of 20.000 years? [duplicate]

So, in my world, humans were imported to the world about 20.000 years ago. The planet was terraformed to be an earth clone and has 2 Supercontinents. Basically, I need traits that could have emerged ...
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1 vote
3 answers
154 views

How might a dragon escape from these advanced humans? [closed]

THE DRAGONS When standing on all fours, a typical full-grown dragon is about 3 times as tall as a human. They are quadrupedal with four legs, opposable thumbs on the front legs, and two or four wings, ...
  • 1,413
3 votes
1 answer
169 views

How would human body evolve on a super-habitable world?

Assuming that a person can survive on a world that's super-habitable, with it's 1,5 atm atmosphere consisting in 38,4% of oxygen, with increased concentration of (~0,5%) hydrogen and (1,2%) carbon ...
  • 65
22 votes
16 answers
5k views

How can I force humanity to retreat to the ocean floor

I'm looking for an mass-extinction level event that would cause most life on the surface of Earth to be forced back to the oceans, one that is not feasibly reversible for humanity, before societal ...
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2 votes
3 answers
1k views

How would a person's abilities change on a super-habitable world?

Suppose that humanity arrives on a super-Earth. Surface gravity = 1,24 g. Atmospheric pressure = 1,5 atm. Atmospheric composition includes 38,4% oxygen + 1,2% carbon dioxide + 0,5% hydrogen How ...
  • 65
7 votes
8 answers
275 views

Why would a settlement set up shop INSIDE a supermassive creature's mouth?

In a story idea I have, there is a massive, stationary beast, with teeth the size of houses, a body as large as a continent, and an unfathomably large mouth (don't ask how it sustains itself, nobody ...
  • 1,413
7 votes
2 answers
723 views

Could interspecies blood transfusion from organisms of various sizes occur?

In my universe, there are sixteen species from the Homo genus: anatomically modern humans, demons, angels, merfolk, ogres, giants, halflings, dwarves, elves, goblins, gnomes, orcs, trolls, vampires, ...

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