Two of the witnesses yesterday testified that it was quite normal for Brad to be watching the chidren while Nancy had time for herself, although they acknowledged that while Brad was doing his MBA he was very busy. The earlier testimony painted Nancy as being solely responsible for the chidlren, but I think that testimony was selected to give that impression. Yesteday's witnesses also testified that Nancy exaggerated and embellished so much that they called her on it. Would any of those friends that testified in the beginning have said something if Nancy was having an affair? Perhaps, and perhaps not. They seemed to have made up their collective minds that Brad did it, and they did not seem interested in providing any information that pointed in a different direction.
Also, we have the "alibi" comment from another friend, one that was uncomfortable with the fact that Nancy used her to explain to Brad what she was doing with her time. That suggests that Nancy had claimed, in the past, that she was doing one thing when she was in fact doing something else. According to Brad, Nancy went for a run. Perhaps she was meeting with someone, but Brad was given a line that "she was going for a run".