Madonna and Angelina Jolie Sightings

Madonna and her husband were spotted at a restaurant last night, which created a buzz about whether their marital problems may have been grossly exaggerated or if they were deliberately having dinner at a New York restaurant to dispel such speculation.

I took an introductory course in philosophy, but never one in logic. Does eating out with your husband rule out your having an affair with Alex Rodriguez? Is that true for everyone? How about a woman having dinner with Alex Rodriguez? What does it mean that my husband and I are going out for sushi tonight? Can I conclude neither he nor I are involved with Alex Rodriguez? Is the same true for every other couple in every other restaurant? Poor A-Rod. Is he all alone and ordering in?

If you ever feel sheepish about not spending your time more productively, who are the people who report the Madonna and Angelina Jolie sightings?