OK, I have to go back and watch the last 10 minutes or so because Sophie got sick at about 8:50.
The rock and the scales makes me think that Jacob and UnLocke are yin and yang to some degree. Richard definitely knows what's going on, but won't/can't say.
We got a clue to the meaning of the numbers. Now I wonder if there is some sort of connection with the 'placement' of the numbers in the sequence. I haven't had time yet, but it would be interesting to see if numbers closer together in the sequence show friendships between the characters.
Thoughts?