@Brother James,
Brother James wrote: But then, if you actually demand physical "evidence", there is none to be had.
Thanks --- I suspected as much.
Brother James wrote:Imagine how confident a person might be to demand in the 1600's that anyone who suggests that someday a large metal object will fly is insane and should be locked up.
Never mind the 1600s. Leonardo da Vinci's flying machine, sketched in the 1400s, comes close enough as a proof of concept.
Nobody locked up da Vinci for proposing it. You see, Renaissance people weren't as dense as you want us to think --- and neither are the 21st-century people who are probing for substance behind your confident new-agey proclamations.