Trust, or expressions of trust, those who can appreciate things at face value initially, are more likely to gain a proper understanding of peoples perspectives IMO, no-one like to talk about true, its erm, a sensitive subject, its not tangible, or bargained directly, but people are aware of it, at least on a less conscious level. I find that those less trusting, or overtly extremely selective, tend to struggle in developing a stable relationship, especially when independence is low, for those brief reasons i think people with less trust can make silly, experimental judgements, decisions, from a a bias-view.
Don't be scared to let trust guide you. We are instinctive animals, and evolutions has done wonders for our complexity, and our society as a whole must learn "how to trust", all for a better future.
To summarise. Either extremes fallible.
TRUST---------------------------------------------------------------------------------------------------------NO TRUST