[quotemstr]

I like the L1 screen idea. It's quickly reversible, after all. Besides, in the long run, if we're going to because a Kardashev type I civilization, we're going to need some kind of planetary energy management. Why not start now?

[lstodd]

The screen itself can be quickly removed, yes.

But will the effects of it being there for some time be also temporary? No one can say.

edit: better phrased as

On what timeframe the negative effects of a temporary screen will revert?