Invented a world-beating internal combustion engine? Actually no, you haven’t

I’ve just read an appeal from an inventor looking for help to develop his truly revolutionary internal combustion engine. He is doomed. I don’t want to embarrass him so will be light on detail. I strongly suspect he’s designed a perpetual motion machine, but that’s beside the point. My reason for writing about him is that he typifies a certain kind of inventor who thinks his invention is a game-changer but has no understanding of what […]