Your standard is tangible (from a human perspective) proof, and as Zim pointed out earlier, that ain't gonna happen.
2 Corinthians 4:18 ~ "So we fix our eyes not on what is seen, but on what is unseen, since what is seen is temporary, but what is unseen is eternal."
2 Corinthians 5:7 ~ "For we live by faith, not by sight."
It is a matter of faith ... one either chooses to embrace and maintain it or not.