[ExI] Feasibility of solid Dyson Sphere WAS mbrains again: request

[Eugen Leitl]

On Wed, Sep 28, 2011 at 06:49:58PM -0700, Dennis May wrote:

> Been through all that kind of discussion before.  Whatever defenses
> you build the resources outside to overcome them can be as large
> as it takes.  Beams of diffuse anti-matter dust are my favorite.

I don't see much difference between aliens and local agents.
There's no additional incentive to annex from outside than from
the inside, brute-force external attacks are logistically 
greatly disadvantaged, and of course you'd rather pwn to own.