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celtschk
  • Member for 9 years, 9 months
  • Last seen more than 1 year ago
9 votes
9 answers
4k views

How would a disabled person earn their living in a medieval-type town?

6 votes
11 answers
761 views

In a world without science, what would cause society to widely lose belief in the fundamentals of its religion?

28 votes
9 answers
8k views

Why would alien vehicles be tripods?

1 vote
2 answers
326 views

Making Mars more massive

4 votes
8 answers
7k views

What would a relativistic kill vehicle hitting the moon look like from earth?

4 votes
1 answer
619 views

Can there be planets with extremely strong magnetic fields?

1 vote
2 answers
291 views

Would self-flying cars fly?

14 votes
4 answers
3k views

Bringing potatoes to the middle ages

131 votes
21 answers
17k views

How does Santa protect himself from IP lawsuits?

5 votes
5 answers
1k views

How can a clairvoyant do good and at the same time protect himself?

21 votes
6 answers
2k views

How to safely wish?

8 votes
4 answers
724 views

How to make elections magic-proof?

16 votes
6 answers
2k views

Medieval low-energy houses

19 votes
4 answers
2k views

How far would I have to be from a nuclear detonation in space in order to survive it?

155 votes
34 answers
20k views

The AI that fails to be evil

14 votes
6 answers
5k views

Realistic spaceships: How to design a transport spaceship?

6 votes
2 answers
759 views

How to make Varus win the battle of the Teutoburg Forest?

43 votes
12 answers
16k views

A person from medieval times comes into our time. What would he notice first?

25 votes
1 answer
5k views

How to make a flying human

16 votes
4 answers
1k views

The god of the atheists

88 votes
29 answers
11k views

Encrypting maps

4 votes
9 answers
1k views

What could have caused the end of magic? [closed]

7 votes
5 answers
374 views

Animals for weightlessness

15 votes
7 answers
718 views

How to fight the orwellian machines?

45 votes
16 answers
11k views

A pill to make you think faster: Side effects?

35 votes
4 answers
3k views

How large could a planetary diamond be?

15 votes
1 answer
2k views

Radiation shielding for a space ship

17 votes
3 answers
1k views

Sharks with frickin' lasers!

52 votes
16 answers
8k views

On a generation ship, how to handle the dead?

13 votes
6 answers
5k views

Humans as pollinators