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Dan's user avatar
Dan's user avatar
Dan's user avatar
Dan
  • Member for 8 years, 6 months
  • Last seen more than a month ago
46 votes
Accepted

How to completely destroy a city, without leaving clues for humanity 4,000 years later?

18 votes

Is there a reason for a humanoid species to be 'biologically' matriarchal with females being slightly more dominant than the males?

16 votes

How does one prove rulership in a rural illiterate world

12 votes
Accepted

Need a specific event that wrecks the surface, allows the race to survive in bunkers, and affords an aftermath suitable for them to rebuild

11 votes
Accepted

What are the odds that an alien spaceship entering a low Earth orbit would collide with an orbiting body?

9 votes
Accepted

Calculating an eccentric enough orbit to allow a dip into atmosphere and escape again

8 votes

The sexy zombie outbreak

8 votes

What would make radio transmission unfeasible on a planet?

6 votes

Is it possible to have a habitable planet unsuitable for agriculture?

6 votes
Accepted

Is this a plausible timeline if the United States legalized prior restraint following the Pentagon Papers?

6 votes

Safely preserving a manuscript for 700 years

5 votes

How does a migratory species farm?

5 votes

Assuming that all separatist movements in North America succeeded, what would borders look like?

4 votes
Accepted

Could organisms live in the rings in a planet?

4 votes

Under what conditions would a society be able to remain undetected in our current world?

4 votes
Accepted

Water planet turns into desert world without being rendered uninhabitable

3 votes

Which current networking protocol would be the optimal choice for very small FTL bandwidth?

3 votes
Accepted

Planet Orbiting a Red Dwarf

2 votes
Accepted

What would be the atmospheric pressure gradient in an open pit reaching to the centre of the moon?

2 votes

After evacuation to a new planet, how would a population switch from a barter system to a monetary system with banks?

2 votes

Progressive level of abandonment of a place

2 votes

Why would civilizations with advanced technology still use castles?

2 votes

Do I Have to Radically Change Plate to House Gems?

2 votes

Feasibility of a tree with a circulatory system

2 votes

Alcubierre warp-lanes, what is the most stable way to create them?

1 vote

Possible sky colors compatible with life on earth

1 vote

How would people in the 1920s-1930s explain or rationalize superpowers?

0 votes

How to design puzzles for an ancient period in Earth history?

0 votes

Has a species known about its own extinction, and did that species go extinct?

0 votes

Is it possible to have a habitable planet unsuitable for agriculture?