Lerner has been beating this drum for years, and presented at many conferences. And yet no one has invested. I'd love to know why. Either there's a catch to the technology that he's not disclosing (and the smart money doesn't have a motivation to disclose), or he's asking for unreasonable business terms. The only thing I know for sure is there's no lack of capital available for good fusion research. Not if the money…
This is a good talk about the various variables you need to demonstrate in fusion: https://www.youtube.com/watch?v=L0KuAx1COEk