I think there is a huge difference between the question "How much should I trust this person who is in my life already?" and "How can I find people likely to be trustworthy?" Big five seems like it would be useful for filtering people to add to your life, like if you were dating or running a job interview, whereas I think local (potentially mutable) details start to screen that abstraction out once the person is given and you're trying to make much more particular decisions about the circumstances and nature of the relationship and mut... (read more)