Trust is neither warmth nor competence - trust is the assumption that our mental model of the person we trust somewhat reliably predicts how they actually act, combined with somewhat aligned values.

I mean that when you trust someone, that can mean you either trust them not to screw up or trust them not to screw you over.

Yep - the first one means they're predictable, the second one means they're predictable and your values align.

(Unless you value getting screwed over, I guess ;)

I've often played with these concepts in my head, completely oblivious that someone had coined them and developed them. Thank you for linking this!