# All Questions

21,498 questions
105 views

### Which branches of civilization deserve an overseer? [closed]

In my story's political system, which is in medieval setting, the ruler of the country has a council, which is made of six people from the kingdom's six states. I would like them each to oversee a ...
165 views

### The galaxy is our nursery [closed]

My question: Given that all of the technology I describe actually exists, what would be the most significant risks for the space-colonization project described below? The Project: A group of ...
7k views

### Electricity free spaceship

Assume there's a spaceship in earth orbit that its crew of 24 want to get to Mars, the crew are all humans and possess all of modern day knowledge and equipment, is it possible for said ship to make ...
6k views

### Non-aqueous eyes?

I am trying to create an organism that can survive in space for short periods, but I realized that I can't have its eyes be similar to those of most animals and humans because they would boil in space....
153 views

### Moons in Binary Orbit

Writing a werewolf story, and decided for a bit of flair, so I wanted two moons in orbit. Did a bit of digging, and I found out that to do that, I'd need to either have them in separate orbit (no ...
116 views

### Corporate Overlord [closed]

So I have a company that currently makes about as much as like... say Apple, but is expanding in multiple markets. It's probably going to have a monopoly on several product types in the next couple ...
149 views

### How much blood and/or platelets can a human give to their vampire overlord each day and still be healthy?

This is based on the idea of a society where vampires are known and subsist off of 'willingly' given human blood. An average adult human needs approximately 2000 calories a day to maintain their ...
9k views

### How to hide rifle during medieval town entrance inspection?

Here is my fantasy medieval scenario: There is pair of adventurers, a Supportive/Non-Offensive mage and a swordsman. The swordsman is actually a disguised rifleman who carries a scoped rifle. In ...
226 views

### What would happen to air flow and fires in an O'Neill cylinder?

I was curious: Suppose we built an O'Neill cylinder with an air mixture similar to Earth's (not pure oxygen). Does the air also get "thrown" down towards the floor of an O'Neill cylinder? If I ...
194 views

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269 views

### How to produce milk that's similar to blood?

How could a mammal produce milk which resembles blood? The blood milk should keep as many properties of milk as possible, curding for example, while resembling blood as much as possible. The mammal ...
972 views

### Is it possible to have the age of the universe be unknown?

I’m making a fictional galaxy, and I want the inhabitants of this galaxy to be unable to calculate the age of the universe, I want them to be unaware of how much has already happened. I’ve already ...
104 views

### If oxygen is extracted from blood, would the process cause any hormones within it to be extracted as well? [closed]

Let's say oxygen is continuously being extracted from the blood of a Giant Pacific, 1-and-a-third years old octopus and will be injected into a human using a process similar to this: https://www....
133 views

### How could the hormones of an octopus affect an adult man? [closed]

Let's say the hormones of a Giant Pacific Octopus, 1-and-a-third years old, enter the bloodstream of an adult male. How would or could that affect him?
339 views

### Could a camera on a sniper rifle see the kill? [closed]

We are in the a slightly gritty future. There is space travel, but technology is reasonable. People still shoot bullets and not lasers. Vehicles are powered by nuclear reactors and not magic space ...
85 views

### Procedural Map Creation - Software or Program to create? [duplicate]

Trying to create a map for my fictional world. Obviously, I can do bits like color a paper blue and throw some random green shapes on there to create the land masses. However, the more I look into ...
3k views

### Medieval flying castle propulsion

One day, on the faraway world of not-medieval-Europe, someone discovered that a type of stone could be made to float. A decade or two later, there are flying castles, built out of and/or on a ...
10k views

### Is it possible to have a wealthy country without a middle class?

I'm trying to create well-off country, which judging solely by GDP per capita would be considered wealthy with something like 60,000 USD per capita. However the country middle class is very small. Is ...
1k views

### Would the US government be able to hold control if all electronics were disabled for an indefinite amount of time? [closed]

In my story (modern fiction/ apocalyptic survival fiction) an enemy of the US sets up a EMP pulsing satellite over the continental US, and before we can respond all electronic systems are shut down. ...
286 views

### How might Southern Ontario becoming a tech powerhouse hurt New York? [closed]

I'm working on an alternate future setting (somewhere between 2070 and 2130) in which Southern/South Western Ontario, specifically the London, ON area, becomes a tech powerhouse on par with Silicon ...
851 views

### A planet of ice and fire

I had an idea for a planet which has very hot days, roughly 40 degrees C on average, and very cold nights, average -5 degrees. These figures are subject to change. Of course, there are places which ...
7k views

### How to hide an urban landmark?

Picture an alternative history Second World War Paris. The Third Reich must destroy the Notre-Dame de Paris, and the inhabitants must prevent this. The French do not have access to anti-air weaponry ...
4k views

### How to forge a multi-part weapon? [closed]

So, I'm trying to forge a magic sword. Naturally, this requires magic metal. Luckily, I have access to just such a thing: Spectral metal. Spectral metals are ordinary metals which have been infused ...
211 views

### What would happen if we sent a modern computer into the past? [closed]

According to Moore's law, the number of transistors in an integrated circuit doubles about every two years. Therefore, a modern household computer has the computational capabilities of a supercomputer ...
446 views

### How can I avoid the problems of incest without expanding the gene pool?

The demigods of this world are avatars of the one true God known as Dea and built in the image of humanity. They are independent and have their own opinions from each other, but are connected by a ...
197 views

### Adaptation to high $\mathsf {CO}_2$ concentration

If humans were to live in an earth-like planet with an atmosphere with a significantly higher concentration of $\mathsf {CO}_2$ (Higher than what can be tolerated by normal human for a long period of ...
149 views

### What evolutionary conditions lead to intelligent life? [closed]

I was wondering if intelligent life, in the sense that the species' greatest evolutionary advantage is its' intelligence, is an evolutionary inevitability, or was it a completely random occurrence for ...
147 views

### What would a “free” robot society do with themselves? [closed]

I'm framing the main example for this question within the context of the Star Wars universe, because it's the inspiration of this question. However, we should be perfectly capable of describing any ...
187 views

### Life on land, sea, and what else? [closed]

On earth there are two main media that support complex animal life. One is the sea, with creatures living both on the seabed and the water; Another is the land, with animals that live both on it and ...
285 views

### A deadly disease, 95% of the population dead, suppresses or alters memory in unpredictable ways

Whilst not strictly relevant to this question, the questions and answers may interest the curious: this is the 4th in a series of question here - 1, 2, 3. My population (in excess of 500,000) ...
2k views

### If you had a giant cutting disc 60 miles diameter and rotated it 1000 rps, would the edge be traveling faster than light? [closed]

As if there was a giant angle-grinder in space that slowly increased its speed. The question assumes that material exists to make this super-disk that doesn't rip apart. What happens as the edges ...
135 views

### Ocean currents near the poles

I'm trying to create a earth-like world, with different land masses. I want to make a realistic climate scheme and determining ocean currents is a part of this. I've done some research on ocean ...
8k views

### Can the poison from Kingsmen be concocted?

In the movie Kingsmen, there is a poison which behaves differently from most other poisons. It has to be ingested in order to kill, but that is not enough. It is harmless until a radio signal is ...
117 views

### How can a medieval-era village keep out aerial intruders? [duplicate]

In my fantasy world, I have humanoid beings who are as adept in the air as they are on the ground. They can walk around just as humans do, but they can also just as easily float into the air or shoot ...
128 views

### How would one go about getting away with illegal human experimentation? [closed]

My protagonist is subjected to involuntary experimentation because she has superpowers. I want it to be painful and traumatizing. Every time she is injured, she heals more resilient to harm, and she ...
3k views

### Are “living” organ banks practical?

I was inspired by Dead Space which had cloned organ banks for transplants due to mining accidents. I honestly found this idea intriguing so what I'm wondering would it be practical or do better ...
180 views

### Shape-shifting using particle-sized 'building blocks'

My fictional world has special sorts of vehicles that can shape-shift, using some sort of building blocks which are a few times larger than average molecules. These sorts of substances can rearrange ...
287 views

### Ideal time in human history for reveal of Demi-Humans and the Conditions for their coexistence

In this world, demi-humans (not just elves or orcs, but also other races like lamias, centaurs, minotaurs, driders, lizardman, alraune, vampires, etc.) have always existed but they did not start ...
7k views

### How can drunken, homicidal elves successfully conduct a wild hunt?

In this premise, the drow rule the fae-realm, an alternate dimension existing alongside the material plane. Every year on one night, the drow have an event known as "The Wild Hunt". During this night, ...
642 views

### How could a government be implemented in a virtual reality? [closed]

In the not so far future a lot of people live inside virtual realities. But there are not only humans living in these virtual worlds but also machines (programs/AI/bots/etc...) on different levels of ...
8k views

### What can plausibly explain many of my very long and low-tech bridges?

I have a very large developed (relatively rational) fantasy game world which mostly has medieval technology with some Renaissance technology, and some low-powered magic. In it, when I was much ...
263 views

### What's the crew composition of any modern small attack submarine sub?

I'm trying to create a realistic composition of a mildly futuristic diesel attack submarine with API based on a Stirling radioisotope generator. The idea is that thanks to automation it's possible to ...
87 views

### Mind control loophole closing [closed]

I was making a sorta-superhero-genre book with a character that can control minds. Problem is, it gives a lot of loopholes when used in combat and stuff. The problem is, I don't want to put an ...
143 views

### How could one realistically incorporate robots into a post-apocalyptic, 1930s setting?

Trying to flesh-out a post-apocalyptic setting where humanity wiped themselves out during the late 1920s, early 1930s; The survivors have reverted to primitive practices while still having access to ...
457 views

### Can Apes (Including Humans) Be Naturally Patterned Like Felids?

For visual reference: Apes are visual species who rely more on their eyesight than any of the other senses. As a result, they see the world in three shades of color, whereas other mammals see in one ...
150 views

### Traversal of creatures in space (hydrogen metabolistic processes)

For a space-based story I am writing, I was hypothesising about how to have organisms that can thrive the vacuum of space. Ignoring plausibility of such a creature evolving, I realised a few problems ...
141 views

### How to shrink the human population? [closed]

So I'm writing a post apocalyptic story. Basically, a war happens and after a solar storm there's very few human survivors on Earth. This world has "magic" crystals, rocks that emanate energy. The ...
101 views

### What would make a groke's metabolism endothermic in the thermodynamic sense?

This recent question got me thinking about a creature concept I've tentatively named after everyone's favourite Moomins character, the Groke. In particular, the creature concept is based on her below-...