JBH's user avatar
JBH's user avatar
JBH's user avatar
JBH
  • Member for 6 years, 9 months
  • Last seen this week
  • Montana, United States
174 votes

If the Romans found one working steam engine would they have been able to copy and use it?

115 votes
Accepted

A list of worldbuilding resources

108 votes

What could a self-sustaining lunar colony slowly lose that would ultimately prove fatal?

104 votes

Speedrun to the moon in one lifetime?

100 votes
Accepted

Why might the government keep the gold at Fort Knox, even though super-villains steal it all the time?

94 votes

Justifying Affordable Bespoke Spaceships

80 votes

Why would a civilization that has invented teleportation use other means of transportation?

73 votes

Minimizing the Side Effects of Breathable Outer-Space

67 votes

How to get cool night-vision without lame drawbacks?

64 votes

Everything Bob says is false. How does he get people to trust him?

64 votes

Logical reason why my dystopian government exiles rebels instead of killing them?

58 votes
Accepted

Is there a hypothetical scenario that would make Earth uninhabitable for humans, but not for (the majority of) other animals?

57 votes

Weaponry made from extreme light-weight steel: swords and daggers

54 votes
Accepted

Are nuclear-propelled shotgun slugs viable?

53 votes
Accepted

If rain magically started falling over the Sahara, what would happen?

53 votes

If Sweden was to magically float away, at what altitude would it be visible from the southern hemisphere?

51 votes
Accepted

How does a society domesticate the hippo?

51 votes
Accepted

Interstellar war without co-ordination, is fine timing important at these scales?

50 votes

How can powerful telekinesis avoid violating Newton's 3rd Law?

50 votes

Under what conditions would a space battle involving a relatively large number of vessels be barely visible on the surface?

48 votes
Accepted

Could human civilization live 150 years in a nuclear-powered aircraft carrier colony without resorting to mass killing/ cannibalism?

47 votes

How would you make money by "worldbuilding"?

47 votes
Accepted

Why would someone carry a traditional longbow instead of compound bow?

47 votes
Accepted

All of the freshwater on Earth has suddenly vanished - would humanity survive?

46 votes

Is it possible to rule a galaxy without mastering teleportation?

45 votes

Is it a good idea to shove your arm down a werewolf's throat if you only want to incapacitate them?

45 votes
Accepted

What are plausible faster than light methods for a far advanced civilization that aren't a warp drive

45 votes
Accepted

Can I get away with lowering gravity so that the usual solar masses in our universe are simply planetary masses in the setting's universe?

44 votes
Accepted

How difficult would it be to reverse engineer a device whose function is based on unknown physics?

43 votes
Accepted

Why can't the alien's particle shield be replicated despite using common elements?

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