User kaya3

26 votes

Can we Build a World Where Cooking is Difficult?

answered Oct 7, 2021 at 1:37

19 votes

Is it possible to make a concealable firearm that is undetectable to metal detectors?

answered Oct 24, 2022 at 10:20

13 votes

How to make money from free electricity (and not draw attention)?

answered Jan 7 at 13:41

12 votes

Will this super flying brick meet his identical copy in another universe?

answered Dec 29, 2022 at 7:29

11 votes

How efficient would pumping water uphill be using hydropower?

answered Oct 4, 2021 at 22:15

11 votes

How can you tell an AI apart from a human over the phone but not in person?

answered Aug 31, 2021 at 11:34

8 votes

Accepted

Are Black Holes Military & Economic Assets?

answered Jan 30, 2022 at 5:07

8 votes

Seeing oneself in an abstract painting

answered Dec 27, 2021 at 11:43

7 votes

How would a sci-fi matter replicator create a pressurised aerosol can?

answered Apr 28, 2021 at 13:39

6 votes

How long would it take us to detect that the earth had been enclosed in a shell 1 light year in radius?

answered Apr 25 at 20:37

5 votes

What characteristics does my deadly river need so people can't find the bodies of those who drown in it?

answered Oct 20, 2022 at 0:50

5 votes

How best could our society explore dungeons?

answered Dec 1, 2021 at 0:34

5 votes

Biological siege weapons: Part 1 - Are living things capable of breaking down the gates of a medieval gatehouse?

answered Dec 9, 2021 at 20:11

4 votes

How can evolutionary pressures lead to a decrease in modern day human lifespan?

answered Oct 26, 2021 at 18:08

4 votes

Could extremely tall towers be held up by balloons so that they don't collapse under their own weight?

answered Dec 9, 2021 at 18:18

4 votes

Safety when entering a spherical or one-way portal

answered Sep 26, 2021 at 19:42

4 votes

Non-electrical technology that pre-modern people would see as magic?

answered Mar 31 at 23:14

4 votes

How could two AIs “battle” within a closed off computer?

answered Jan 8 at 16:02

3 votes

What makes my artificial intelligence indestructible, but containable?

answered Aug 19 at 20:44

3 votes

Why does a divine judgement system not strike down evildoers?

answered Jul 28, 2021 at 10:42

3 votes

Any given couple is either only capable of having sons or only capable of having daughters

answered Jul 31, 2021 at 13:36

3 votes

What single change in history would make rear steering cars a standard?

answered Aug 5, 2022 at 12:24

2 votes

Non-religious reasons to have highly advanced physical simulations without any AI which can predict or mimic human behaviour, even algorithmically?

answered Sep 2, 2022 at 9:05

2 votes

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

answered Sep 30, 2022 at 20:23

2 votes

Could a merchant city survive not having an military?

answered Oct 3, 2022 at 10:21

2 votes

How would a language-based disease work?

answered Oct 14, 2022 at 21:52

2 votes

Is it possible to have lasers that travel slower than light?

answered Aug 21, 2021 at 0:59

2 votes

Antimatter accident afterglow?

answered Oct 21, 2021 at 15:42

2 votes

How soon after first contact could an advanced civilization make large financial transactions on Earth?

answered Mar 30 at 9:50

2 votes

How could submarines be put underneath very thick glaciers with (relatively) low technology?

answered Jun 30 at 16:39

Stack Exchange Network

57 Answers

Can we Build a World Where Cooking is Difficult?

Is it possible to make a concealable firearm that is undetectable to metal detectors?

How to make money from free electricity (and not draw attention)?

Will this super flying brick meet his identical copy in another universe?

How efficient would pumping water uphill be using hydropower?

How can you tell an AI apart from a human over the phone but not in person?

Are Black Holes Military & Economic Assets?

Seeing oneself in an abstract painting

How would a sci-fi matter replicator create a pressurised aerosol can?

How long would it take us to detect that the earth had been enclosed in a shell 1 light year in radius?

What characteristics does my deadly river need so people can't find the bodies of those who drown in it?

How best could our society explore dungeons?

Biological siege weapons: Part 1 - Are living things capable of breaking down the gates of a medieval gatehouse?

How can evolutionary pressures lead to a decrease in modern day human lifespan?

Could extremely tall towers be held up by balloons so that they don't collapse under their own weight?

Safety when entering a spherical or one-way portal

Non-electrical technology that pre-modern people would see as magic?

How could two AIs “battle” within a closed off computer?

What makes my artificial intelligence indestructible, but containable?

Why does a divine judgement system not strike down evildoers?

Any given couple is either only capable of having sons or only capable of having daughters

What single change in history would make rear steering cars a standard?

Non-religious reasons to have highly advanced physical simulations without any AI which can predict or mimic human behaviour, even algorithmically?

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

Could a merchant city survive not having an military?

How would a language-based disease work?

Is it possible to have lasers that travel slower than light?

Antimatter accident afterglow?

How soon after first contact could an advanced civilization make large financial transactions on Earth?

How could submarines be put underneath very thick glaciers with (relatively) low technology?