Tony Sivori wrote:

Matt Giwer wrote:

Tony Sivori wrote:

Ah, you assume a lot. That kind of engineering may be impossible.

Actually there is only impractical (today) engineering. There is no such
thing as impossible engineering. There is only impossible science and the
observation is never believe a scientist who says something is impossible.

Then for "impossible engineering" substitute "never successfully executed".
The effect is the same.

    Not AS YET successfully executed. Today plus 100 years throws every idea of "as yet" we might have today into the shitcan. Plus 1000 years certainly takes engineering into the realm of magic. In this universe we can add several billion years without making unreasonable assumptions as to second generation stars.