These guys (Pickett and his "scientists") are sitting under a tree, getting hit in the head by an apple, and concluding there are invisible monkeys throwing apples at them. And therefore, since there are unlimited invisible monkeys, harnessing the apple energy is limitless.
Just a scam.
I have no humble opinions, but I do have opinions and those are what I express in my posts. BUT...I have been wrong before and likely will be wrong again so do your own research and don't blame me if you are too lazy to do so.