So, uhm, why is Dr. Leland Ryken still writing books about subjects he’s not qualified to discuss?

Last time he did it quite poorly.

I do hope that since he’s last book, he’s done some more background reading, perhaps studied how language and meaning function, and perhaps audited a class or something from an SIL school.

In any case, He should stick to talking about English literature. He’s much better at that – actually I’ve read some of his literary studies. They are excellent.