In "Dawn Treader", Lewis made two changes; one minor and one of more substance. The minor change appears in the first chapter where Lewis changes the description of Eustace from "far too stupid to make anything up himself" to "quite incapable of making anything up himself". Paul Ford, author of "Companion to Narnia", suggests that Lewis might have felt the need to soften the passage for his American readers or perhaps he was starting to like Eustace better. Peter Schakel, author of "Imagination and the arts in C.S. Lewis", notes that the passage should have been changed in both cases as "calling a character 'stupid' in a children's book is insensitive and unwise". Both Schakel and Ford agree that it is not an accurate depiction of Eustace as Lewis describes him, and this too may be the reason for the change.