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Alexander's user avatar
Alexander's user avatar
Alexander
  • Member for 7 years, 10 months
  • Last seen more than a week ago
30 votes
15 answers
7k views

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

22 votes
7 answers
5k views

How to catch a Faceless Man?

14 votes
4 answers
866 views

Will asteroid mining be economical in foreseeable future?

10 votes
5 answers
469 views

How to recreate units of measure?

8 votes
5 answers
1k views

Is a utopia a necessarily aged society?

6 votes
4 answers
564 views

Terraformed Venus and Mars

5 votes
7 answers
441 views

Is development of technological civilization without ecological damage possible?

3 votes
6 answers
796 views

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

2 votes
9 answers
458 views

Time traveller's first occupation

1 vote
5 answers
796 views

Society where sexual feelings are synched up

-1 votes
4 answers
158 views

Working your way up in a society [closed]