Fermi's Paradox

--- In spacesettlers, "Combs, Mike" wrote:

> I think we'd have to be talking a parabolic reflector many
> times the size of the Dyson Sphere itself. Granted, the
> reflector could be made of exceedingly flimsy material, but
> it still might easily double the engineering challenge.

So possible, but terribly expensive, and wouldn't be done without a VERY good reason.

> I would say it would only worth doing in a universe filled
> with vicious predators who dedicate themselves to snuffing
> out any and all intelligences they become aware of.

That would be a very good reason. _

> So what about the civilizations that don't know about the
> predators yet?

They got snuffed out. _

Also, do they know in which direction the predators are located? It doesn't help to squirt you evidence right at them.

So it isn't a likely explanation of why we haven't found the aliens, but it is on the edge of possibility.