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I'm sorry, but this isn't exactly stuff that's going to go over most readers' heads. The efficiency of a new device like this is pretty much the most important information about it. At 0.4% efficiency, this is currently just going to make your devices heavier and marginally more efficient. If it were more efficient it might make things heavier and significantly more efficient.

[mrseb]

I agree -- I wasn't suggesting that the efficiency would go over readers' heads. I was generalizing :)

I will add the efficiency of the technology to the story now.