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Top Questions

31 votes
14 answers
7k views

In a fantasy world where people can ride monsters and fantastic beasts, why does the horse still remain in active duty?

45 votes
10 answers
11k views

If humans were the size of ants could we have campfires?

16 votes
16 answers
6k views

Is there a paternity test method given medieval level technology with low false positive rate?

22 votes
14 answers
7k views

What to bring back from the past to prove the success of a Time Machine? [closed]

16 votes
14 answers
5k views

Why does space warfare not lead to total anhiliation of both sides?

16 votes
14 answers
5k views

If every action a human does is tracked, would serious crimes be greatly reduced?

14 votes
14 answers
8k views

How would the US military efficiently deal with Necromorph-like zombies?

16 votes
14 answers
3k views

Why can my spacefaring civilization maintain, use and even adapt their tech, but not manufacture it themselves?

10 votes
17 answers
2k views

How might derelict space ships/stations be only partially salvageable?

5 votes
14 answers
3k views

How could the lottery and gambling work with accurate fortune tellers?

19 votes
9 answers
5k views

Could a pine forest with year-round snowfall survive?

11 votes
10 answers
5k views

Under what conditions would a space battle involving a relatively large number of vessels be barely visible on the surface?

11 votes
8 answers
5k views

How to prevent humans from being killed by alien diseases?

19 votes
10 answers
6k views

Are there radio systems that allow people to talk simultaneously?

18 votes
9 answers
4k views

Is it possible for a fairly large community to remain hidden in Scandinavia until the start of the 20th century?

9 votes
14 answers
3k views

Is it plausible for a world without an external universe to develop a year system?

15 votes
13 answers
3k views

How could humanity colonizing multiple planets and solar systems prevent speciation of the human species

6 votes
10 answers
6k views

How can an alien civilization mostly stay as a Monarchy but still be advanced enough to travel around the Galaxy?

7 votes
9 answers
4k views

Can the princess escape using shoddy craftsmanship in a one-sided lock?

14 votes
12 answers
3k views

What could be the justification for having isolated domes all over a planet with people living inside them and not knowing about the real world?

11 votes
10 answers
2k views

Addressing paradoxes with Weapons designed to hit a target in the past

4 votes
7 answers
2k views

How can a species be fine with digesting poisons and toxins?

5 votes
8 answers
2k views

How could politicians protect themselves from hypnosis?

4 votes
9 answers
2k views

Harvesting wind energy for vehicles

15 votes
8 answers
3k views

Can a lone alien entity develop an internal language?

8 votes
8 answers
3k views

Hiding a Continent

11 votes
7 answers
3k views

Why would a society be matriarchal but patrilinear?

12 votes
9 answers
2k views

Possible explanations for abnormal day/night cycle?

9 votes
5 answers
3k views

Is this a breathable atmosphere for human-like aliens that have more efficient oxygen-carrying blood? Normal humans would require a gas mask (oxygen)

9 votes
5 answers
2k views

What kind of tactical situation/s would be best approached with trained jetpack pilots?

9 votes
5 answers
2k views

How feasibly could a post-apocalyptic society achieve aviation?

16 votes
4 answers
3k views

Is taking steroids in the apocalypse a good idea? [closed]

9 votes
7 answers
4k views

Can you have a very cold swamp?

14 votes
6 answers
2k views

Primitive weapons built from resin?

7 votes
5 answers
2k views

How Could an Organism Evolve "Unintentionally" into a Cyborg?

6 votes
7 answers
2k views

Hydroponically growing animal feed in a space ship

7 votes
5 answers
1k views

How can my fictional race of humans extend the area of their world they can explore?

10 votes
5 answers
2k views

If Earth's atmosphere is technically violet but our eyes can't see it, is there a possible variable that can let us perceive that?

9 votes
5 answers
2k views

What are potential avenues for firearms and weapons technologies for a biotech-centric species?

11 votes
8 answers
3k views

What key invention allows the exploration of my hot humid world?

8 votes
8 answers
2k views

How to get the Lilim to breed true?

10 votes
3 answers
1k views

Can a long retractable neck work with an exoskeleton?

7 votes
3 answers
2k views

Giant Freshwater vs Saltwater lakes

4 votes
10 answers
2k views

Could a merchant city survive not having an military?

4 votes
6 answers
1k views

In an Urban Fantasy Setting, Why Would a Magical Courier Be Hired Over Traditional Couriers? [closed]

4 votes
6 answers
1k views

Countering Free-Electron Lidar?

10 votes
2 answers
3k views

Could a binary star system support life?

6 votes
5 answers
875 views

How could dryads realistically grow plants out of their body? [closed]


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