Ok, I see what you mean now. Yes, this is often true, but again, I am trying to be less preachy (at least IRL) about rationality - if someone believes in astrology, or faith healing, or reincarnation then: (a) their beliefs probably bring them comfort (b) Trying to persuade them is often like banging my head against a brick wall (c) even the notion that there can be such a thing as a correct fact, independent of subjective mental states is very threatening to some people and I don't want to start pointless arguments

So unless they are acting irrationally in a way which harms other people, or they seem capable of having a sensible discussion, or I am drunk, I tend to leave them be.