The Wood Between the Worlds

My prediction for the chapter The wood between the worlds from The Chronicles of Narnia is that the place where Digory and Polly were teleported is Narnia. I think that because in all Narnia’s stories the setting begins in a forest. My prediction was part correct: this forest could have been Narnia or any forest in the world but what it really is a special place with hundreds of pools that could take you almost anywhere.
One of my questions is: Why couldn’t Polly and Digory remember who they were when they got to the forest? They couldn’t remember who they were because the rings had magic inside of them that make them forget something (and also make me almost forget the next question).
The second question is: By me reading this chapter what did I find out about Digory’s future? In the future the narrator said that since Digory wants to learn almost everything in the world, he would want to become a professor and will write a lot of books. Since the narrator is telling the story I realized that he knows more than the characters in the book. Another example is when he said “(the soil smelled nice)” help me to see the situation better.
I had trouble with the word pluck. I first reread and I thought it meant courage so I went to online dictionary to see if I was correct. The definition was mostly picking from a bush but there were some bravery too.