My thinking exactly! Do not extend trust - extend the attempt to try to verify, if you think the matter is important.
On living with uncertainty - this seems to be our major struggle. We can't say "I don't know", we would rather the life-raft of a comfortable story that assuages us. Most of us are both arrogant not because we know/have verified but because of stories/beliefs. It is hybris!
In addition, the issue of learning to live with uncertainty, being mature to the degree that unknowable answers and their questions simply set in an unknowable and ripe for exploitation category in one's mind. Grasping the power granted to others when they claim answers to unknowable questions is the true source of evil in this human society.