Some choose to not believe anything that anyone says.
And what do you say?
(you gotta be highly suspicious of the group that shout the loudest, especially if they are pretending to be do-gooders out to "help and inform you" they claim they are not effected in anyway, but just on a mission to convince you of their truth. Empires have always claimed to be bringing civilisation to the savages, for their own betterment of course)
TL/DR Trust NO ONE
This involves the danger of being isolated and -believe me- this won't help you evolve (not personally speaking). A group of "not so trusted" people are much better than a "trusted" one when it comes to progress. Besides, all the great achievements are based on a "quantum leap of faith". Yes, there's the danger of you getting burned by your "entrusted" ones, but imho, it worths the risk.
You can take on information without 100% trusting what any outside source TELLS (or invites) you to believe.
Then you have the best of all worlds.