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Thats just not realistic at all. Its so far away from realistic, i'm not sure why arstechnica is posting this VC ad.

You need the size of the area you want to shine it up which is HUGE.

Why do we entertain this? How do people get funding for doing this? Are people so ignorant?

10 years ago, having a reusable rocket booster was not realistic.

5 years ago, catching a rocket booster with a tower was not realistic.

The past 150 years has been wild, I'm not too sure I think anything is unrealistic anymore.

How about we plaster our existing area full of PV and than in 10 years we talk about space?