The notion that appearances by the same character in two or more series tie those series together in the same fictional universe is also problematic. Weatherson, in his sixth objection, offers the example of Michael Bloomberg playing the role of New York City Mayor both on "Law & Order" and in real life, which, if one accepts the logic of the hypothesis, indicates that real life is in the head of Tommy Westphall. Thus, it does not follow that because one person, place, or thing is present in two or more works of fiction that those works are necessarily related.