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Comment by BurningFrog | Hacker News Reader

So some very advanced and bored civilization could take black holes and shoot gigantic numbers of protons into it, and get a very positively charged black hole.

If you pump in enough charge that the electrical repulsion is stronger than the gravity attraction, you can then store them safely next to each other, for when you might need one.

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Cool. You would of course end up negatively charged yourself and therefore quite strongly attracted to the black hole.

So I would recommend moving your civilization to a Dyson sphere around the black hole before aiming your cluster of LHCs at it.

It also allows you to move the black hole around, somewhat freely.

It may be a very useful thing if it turns out that we can make small ones.

> move the black hole around, somewhat freely [...] small ones

At the risk of spoiling the mystery of a 50-year-old short story, this happens in the The Borderland of Sol by Larry Niven.

I immediately thought of that story as I was reading the comment you replied to :P

If you enjoy that sort of thing, also read Killing Vector by Charles Sheffield.

Flinging one at an enemy civilization could be a clean way to resolve conflicts!

It is practical? If you don't slow it down somehow it will pass through anything and go away through the other side.

Maybe you can time it to evaporate on your enemy, but that's an incredibly precise timing, and your enemy will literally be able to see it coming and deflect it.

"Aside from permanently rending the very fabric of space and time itself, there was very little collateral damage."

Well, it's not like it's in short supply...

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