User Alexander

30 votes

15 answers

7k views

How old do surviving children need to be to keep human civilization from failing?

asked Aug 30, 2018 at 23:18

22 votes

7 answers

5k views

How to catch a Faceless Man?

asked Sep 14, 2017 at 20:00

14 votes

4 answers

866 views

Will asteroid mining be economical in foreseeable future?

asked Sep 26, 2019 at 18:29

10 votes

5 answers

469 views

How to recreate units of measure?

asked Jan 20, 2022 at 21:42

8 votes

5 answers

1k views

Is a utopia a necessarily aged society?

asked Nov 25, 2020 at 22:00

6 votes

4 answers

564 views

Terraformed Venus and Mars

asked Feb 19, 2019 at 22:06

5 votes

7 answers

441 views

Is development of technological civilization without ecological damage possible?

asked Aug 22, 2019 at 21:00

3 votes

6 answers

796 views

Can blind people build a spaceship and land on the Moon?

asked Jul 19, 2018 at 19:23

2 votes

9 answers

458 views

Time traveller's first occupation

asked Oct 13, 2019 at 8:58

1 vote

5 answers

796 views

Society where sexual feelings are synched up

asked Mar 10, 2017 at 1:56

-1 votes

4 answers

158 views

Working your way up in a society [closed]

asked Nov 14, 2018 at 19:44

Stack Exchange Network

11 Questions

How old do surviving children need to be to keep human civilization from failing?

How to catch a Faceless Man?

Will asteroid mining be economical in foreseeable future?

How to recreate units of measure?

Is a utopia a necessarily aged society?

Terraformed Venus and Mars

Is development of technological civilization without ecological damage possible?

Can blind people build a spaceship and land on the Moon?

Time traveller's first occupation

Society where sexual feelings are synched up

Working your way up in a society [closed]