Into the Wardrobe

[quote="Theo]As we all know, Narnia wasn't a secondary world in the Middle-Earth sense - Lewis was plainly making it up as he went along and putting all kinds of stuff in without much thought of how it made sense. This isn't a negative criticism in itself, but it makes most of these after-the-fact rationalizations a bit dodgy.[/quote]

In my understanding, Tolkien was very concerned about being consistent, logical and detailed in creating Middle Earth. He did not want loop holes in his story. Lewis, on the other hand, was writing something more like a dream. A snapshot of a child's imagination. The gate into Tolkien's world for a certain creature or kind of person, etc. was a legitimate root in literature that he respected. The gate way into Narnia was more simply Jack's imagination and fascination.