One of the things that should be noted is how the movie worked to dilute all the metaphors in the book(s).
For instance the whole silver/gold standard thing can’t be seen unless one knows that Dorothy’s slippers were silver in the book and changed to ruby in the movie because they looked better.
The metaphors in Wizard are legion and consistant. It doesn’t so much require one to go looking for them as realize they’re being beaten over the head with them.
Exactly. If you go to the books...forget the movie...and place it into the context of the times...its pretty obvious what Baum was doing.