Hhmmm, lemme grok at this one a bit more. It's not dependent on the object, it's the choice itself. Those that say they "can't choose to believe" X, Y or Z aren't saying they have no capacity to believe, they're saying a specific thing lacks sufficient reason to be believed, at least for them.
Whatever distinctions might exist between these words believe and trust, that same thing applies to me re: trust. I've got to "see it." There are physical applications of this; I won't put my weight on something w/o testing it, or at least having a pan B at the ready. I'd probably make a great rock climber for this reason, although the fact I've never done it may actually have something to do with this
Not consciously though. My point being it makes me be very careful in developing my Faith, as it is something unseen. So it's got to
really check out before I "place my weight on it," so to speak. Don't know if anybody can find that understandable?