Immoral Behavior

How do you explain a person seemingly legitimately trained in science drifting off and becoming more and more of a science denier? In the case of Judith Curry I was unwilling to think of her as a full on science denier for a long time because her transition into denierhood seemed to be going very slowly, methodologically. It was almost like she was trying to drift over into denier land and maybe bring a few back with her. Like some people seem to do sometimes. But no, she just kept providing more and more evidence that she does not accept climate science's concensus that global warming is…