Near perpetual motion machines, near infinite compression schemes, nearly magical medical solutions: people keep pouring money into stuff that qualified scienti

Near perpetual motion machines, near infinite compression schemes, nearly magical medical solutions: people keep pouring money into stuff that qualified scientists say is simply not possible. If the majority of people with relevant expertise say something is not possible, people should just believe them. They will say more careful things like 'there are technological difficulties' or "I don't see how you could make that work, but I guess it could be possible" if there is a possibility something will work. Years ago the same kind of idea was charging phones by wifi and other EM radiation ubiquitously available. A short calculation by any physics undergraduate shows that it is simply impossible. Nevertheless people invested in companies pursuing the idea. A prototype was presented at expos. The result: nothing. On the other hand, charging by induction was never said to be impossible.