It seems to me that any religion that is still around today has somehow built in a “Don’t fall for the scam when someone says they’re speaking on [the deity’s] behalf!” warning, if not at least a “Don’t believe the other guys!” clause. But, in general, I think they’ve all built in their ways to try and avoid having their believers get easily swept off to some other system-of-the-week. Something pretty big has to grab a believer’s attention and make him/her reconsider the whole paradigm of his/her life.
If some alien visitors# who. . .
A) Ignored human military defenses as if they did not exist
B) Ignored human military attacks as if they were not launched
C) Refrained from decimating human populations (intentionally or accidentally)
D) Demonstrated clearly peaceful and non-predatory intentions
. . . managed to communicate with the humans, they might be able to hand down a religion, providing it. . .
1] provided parsimonious explanations and solutions for our
a> philosophical mysteries
b> scientific limitations
c> metaphysical (woo) misunderstandings (e.g. the Easter Island statues)
2] bridged the perceived gap between religious and scientific and artistic milieu
Otherwise, long before the invention of the Internet many of the world’s more popular religions included built-in safeguards to keep the devout from straying. For instance, Christians would point the gospels and say, “Look! It says here ‘there will be false prophets who will claim to speak with my authority’ and I’m not going to fall for it!” and Jews would say, “No, no. The first Commandment is against following any other deities; this is just a test of our devotion. No; we are The Chosen and we will not break faith.” and Buddhists would say, “Ah, this is yet another illusion; I will not be fooled.” and Taoists would say, “Yeah, yeah. You can roll out a new grand plan, but people still need to eat and there’s still work to be done.”
And, for that matter, the latter two are perfectly accepting of people being Buddhist and ________ or Taoist and ________ or even Buddhist and Taoist and _________ without seeing a conflict. It’s the monotheists who have difficulty with mixing belief systems.*
—G!
#Yes, of course, this is what the millenarian UFO cults are/were all about: Some UFO’s will land and the benevolent aliens will save earthlings from themselves. Even for the non-religious, we’ve tainted popular media and literature by repeatedly suggesting such alien/UFO cults are just scams designed to bilk wishful idiots.
*It’s kind of like the way we do menus in our restaurants: Angus House says, “You can have the Prime Rib with Mashed Potatoes and Asparagus OR you can have the Chicken with Rice but we don’t list the Chicken with Mashed Potatoes.” But Wing Lung will say, “Sure! Pick one from section A, two from section B, and fried, steamed, or no rice from section C – plus a drink if you don’t want tea!”