If a belief
cannot be proven
, then there is no virtue
in holding that belief.
Hence, the articles of faith in most religions are by necessity things which cannot be tested or refuted: your Soul goes to heaven when you die; the fossils were put there by God 10,000 years ago; Allah spoke through Mohammed; and so on.
Some so-called psychics who fail James Randi's tests claim that scientific observation stops their powers from working...