RE: Hole in a box

From: Emlyn O'regan (
Date: Sun Feb 17 2002 - 19:25:36 MST

> At 01:40 PM 2/17/02 +0100, Amara wrote:
> >MSW's Gravitation might be the best place to start for 'harnessing a
> >cosmic generator'. They have a scenario of an advanced civilization
> >which has constructed an enclosed bubble five million miles in
> >diameter around a 10 M_Sun black hole and rotating in a
> >counterclockwise direction at about .94c. A space capsule hauling a
> >garbage barge < snip >
> >This idea was proposed in early 70s.

Damien wrote:
> Yeah, and I'm always amused in a chilled kinda way by this
> 1970s idea of
> `garbage barges' postulated for an era where drextech and its
> successors
> (we now see) will have made the very notion of unwanted waste
> materials
> unthinkable. *Throw stuff away into a black hole*? Are they
> completely *mad*?
> Damien Broderick

I don't know about that. Is there a limit to the size of a Matrioshka brain
that you could build, past which adding more matter is not going to help? If
you had more matter, would chucking it in a black hole for energy be an
acceptable alternate use?


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