In 'The Three Body Problem', we see a prominent scholar and professor being publicly beaten by the communist party for not denying God's existence. He goes on to say that 'Science hasn't provided any definitive answer'. So I'm curious, .
People can be tricked is a simpler explanation. Magicians have entire shows where they trick the perceptions of hundreds to thousands every night. Letters and witnesses could just as easily be justified as aliens rather than god.
No idea what you mean about "alive cardiac tissue on catholic hosts".