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Comment by comnetxr | Hacker News Reader

The radius of the biggest black hole that would have evaporated by now is about a femtometer, or the size of a proton.

Of course a black hole’s temperature is inversely proportional to its mass, so a tiny black hole would be terrifically hot. Ironically a much more massive black hole is undetectable unless it’s lensing something, or “feeding” on something. A small black hole would have a very high temperature just from Hawking radiation.

Aren‘t those the most energy dense objects known to us? Not sure how large the black holes in the ‚Kugelblitz‘ idea are, but supposedly if we could harvest the energy output of a significant fraction of the sun, we could manufacture them and then use it to travel to other stars rather easily... or destroy entire planets, as those two things unfortunately go hand in hand (in that regard Star Wars may be more realistic than other SciFi funnily enough).

Vehicles are too easily weaponized. The amount of energy it takes to move a human and a cabin is more than enough energy to destroy a small building. People have driven their cars into houses and businesses for as long as cars have existed. Not to mention aircraft. And driving cars into cars is a too common tragedy.

The odd part about Star Wars is the relative weakness of their weapons. Star Trek have "warp core breaches in a bottle" AKA the photon torpedo, which is much better at damaging starships than ramming.

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