Can a genius inventor also be a shameless scam artist? Rossi comes to mind, as does Papp. Maybe even Edison ... and Tesla too. There is a thin line, as they say...
Here is a decent analysis of Papp. Recently posted video - well done The Mystery of Joe Papp’s Noble Gas Engine | Ryan S. Wood | | | | | | | | | | | The Mystery of Joe Papp’s Noble Gas Engine | Ryan S. Wood | | |