In order to be interesting, the claim must also be predictive, in the sense of being general or generalizable. That is, the claim must not simply be about a single instance of language use; instead, it must make a general claim about an entire class of uses, and therefore also predict how speakers will behave in the future. It’s not interesting to present an example of a business letter and observe that it presents a problem and offers a solution, unless you can generalize this into a claim that business letters in general are constructed in such a way as to present a problem and offer a solution. Only by showing that