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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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