Ugh! Not a rewrite... same old book.

I am willing to be optomistic... Using the current model imagine scaling this thing up to astronomical sizes so the pay-back ratio gets better, then imagine all of the parts get 100x cheaper to make because we are building at scale.... then with this crazy optomistic scenerio estimate the cost per KWh for the energy from this system. I bet it is not even in the ballpark. You dutifully report what the physicsts say, but never asking critical questions:

what COULD the cost per KWh be? Why not estimate that?

Hint: Because the answer is SO bad, you would want it in print!