> No, the argument is even dumber than that. The person who writes a poem hasn't created any literature.

Sure they have, by virtue of writing it down. It becomes literature when it hits the paper (or computer screen, as it were).

(Unless you mean to imply that formulating an original poem in your mind counts as "writing", in which case I guess we illustrate the overarching point of value in shared symbols and language and the waste of time in stating our original definitions for every statement we want to make)