Can anyone tell me how to find this reference to Professor Silktree? Also, in regards to a comment above about the Unown having more power in Movie 3 than in the game. The Unown clearly play a big part in creating Dialga, Palkia or Giratina.
My theory is that although it says Arceus created this universe, it doesn't say he was the first in this universe. What if the Unown came from their universe using their powers and in fact it was they who created Arceus? Just an idea.