I'll admit to the impossibility of proving free energy since isolated systems are a fiction born of an hypothesis and cannot be applied to appliances anymore than energetic isolation could be applied to the universe. No appliance has ever benefited from any advantageous position that the universe may hold over its progeny. And this advantage of the universe, of being the sole benefactor of energetic isolation, has merely been speculated without existential proof of any sort. Mere postulations have been put forward of the universe's isolation from any energetic source. Postulations do not constitute verification of proof.

Free energy stands on shaky ground. But Conservation of Energy and the entropy of thermodynamics, also stands on similarly shaky grounds since energetic isolation is the sole foundation for all of these ideas, both negentropic and entropic. So, I'm in as bad a pickle of a lack of a solid foundation for my theories as is the entirety of physics.

In short, we are both defeated from achieving absolutism of ideology. Uncertainty (and humility) reigns, supreme.

All we can do is keep guessing.

But I would prefer that physics refrains from misrepresenting these presumptions as "laws".

Let's face it... Free energy may be nothing more than a glamorous thief.

And... Physics may be nothing more than a glamorous liar.