[ExI] Scientists discuss why we might not spot extraterrestrial civs

[Keith Henson]

On Fri, Aug 2, 2024 at 1:39 PM BillK via extropy-chat
<extropy-chat at lists.extropy.org> wrote:

snip

> A "Surely a society that can place enormous
structures in space would be able to access nuclear fusion or other
space-efficient methods of generating power."

That's silly.  They have a star, and thermal power plants will let
them capture 40 to 60%

Keith