At university in 1988 I was taught some facts and figures about networking and electronic communications. Some of it was very compelling matthematical proofs of what can and can't be sent down a wire link, such as telephone wire. At that time it was deemed impossible to carry anything over 100kHz more than a few tens of meters without irecuperable losses.
Well, that was a load of crap, considering DSL signals in the tens of megahertz are routinely connecting people over a single copper twisted pair to exchanges hundreds of metres away.
Maybe we employed those laws of physics in an innovative way, or maybe these "known" laws broke down under certain conditions. Or maybe they were just hokey laws from the outset. Whatever the way, I can't take "can't" seriously at all.
Over-unity systems are currently debunked with as much enthusiasm as they are dreamed up, but some day I'm sure someone will dream one up that works. Then the laws will magically adapt themselves to cater for this anomaly, and everyone will declare nonchalantly "well, yes, if you do it like that, of course it will work", while at the same time wishing the idea had been their's, and secretly banging their collectively expert heads against the bedroom wall at night.