The article states that there are three competing theories about the settlement of Chaco Canyon in New Mexico, what used to be, and provides three reasons of support. However, the professor explains that none of the theories is acceptable, and refutes each of the author`s reasons. First, the reading states that one of the theories believes that the building was residential housing. Although, the professor refutes this and says may be the building looks a like housing apartments from outside, but from inside are not seem to be apartments. The professor further explains that if the building was for housing, it should at least contains more than 100 fire places in order to, people lived there to cook. But actually there were ten fireplaces
