Jasper's user avatar
Jasper's user avatar
Jasper's user avatar
Jasper
  • Member for 8 years, 1 month
  • Last seen this week
  • Seattle
22 votes

Plausible reason why my time machine can only go back a certain amount of time?

20 votes

Motivations for interstellar colonizations

19 votes

What are the evolutionary benefits of mating for life, as opposed to serial monogamy?

19 votes
Accepted

What could have made a species of strong magical beings extinct?

17 votes

How could an apocalypse kill off all adults -- leaving only those under the age of 18?

14 votes

Is It Possible to Have Different Sea Levels, Eventually Causing New Landforms to Appear?

12 votes

Medieval airlocks, would they be possible?

11 votes

How might boat designs change in order to allow them to be pulled by dragons?

11 votes

Can a habitable planet have two separate crusts, both of which can sustain life?

11 votes

How can spacecraft manufactured on the moon be powered?

10 votes

Effects of "tax your vote" political system

9 votes

Why would someone want to be free if slavery offers better quality of life?

9 votes

What would cause a nuclear power plant to break down after 2000 years, but not sooner?

7 votes

How might boat designs change in order to allow them to be pulled by dragons?

7 votes

How can I poison humans over several generations?

7 votes

Aerial combat: winged humans

6 votes

Could guy with offline wikipedia (and solar charger) that was transported into middle ages conquer the world?

6 votes

Why would characters spend time answering imaginary questions to fictional hypotheticals?

6 votes

What's the most likely "post democracy" form of political government?

6 votes

How long can a nation maintain a technological edge over the rest of the world?

5 votes
Accepted

160 Year Solar Orbital Period & 1.9 Year Moon Orbital Period - Is it possible?

5 votes

What can plausibly explain many of my very long and low-tech bridges?

5 votes

How do dwarves defend their City-under-the-Mountain from a dragon?

5 votes

What would the buildings in a city on a marsh be made of?

4 votes

Forcibly drawing power from a higher being, examples?

4 votes

Why would my billionaire have health insurance?

4 votes

Why would the tribes choose herding instead of agriculture in the Great Plains?

4 votes

Plausible reason for Earth not be able to get updates about terraforming on Mars?

4 votes

Economic and geopolitical effects of building a space elevator?

4 votes

Why wouldn’t they try to re-invent automobiles?