Comment by Xenograph

In "yiwei"/"creer" case, Juan believes that they are going to promote him (but his belief is not very well calibrated and is likely false). yiwei/creerse asserts something about the truth value of the belief, in addition to what the belief is.

In the "doubts" case, Juan believes that they are not going to promote him. There is no assertion regarding the truth value of that belief.