If I were to add a question to Prof. Goodman's discussion with Jill Tarter, I would focus on their conversation about the hypothetical human response to first contact with an extraterrestrial civilization. In particular, I would ask whether first contact would unite or divide humanity? There seems to be some evidence for both sides of the argument. On one hand, if the extraterrestrial civilization is seen as a threat, humanity might come together out of fear and self-defense. On the other hand, the threat of an extraterrestrial civilization might widen fault-lines in human society—like national or class differences—and lead to significant division.