I've got questions, questions that need answering...

... yes, about LOST...
I just recently rewatched Series 4 again and Episode 11, Cabin Fever, is a John Locke centric episode. There is a scene of John from when he was about 5 and he is being visited by Richard Alpert. Now, Richard shows John various items of which John has to pick out which belong to him. Behind him is a drawing he has done of 'Old Smokey', from the island. Now how does he know about this monster? it's still another 50 years before he ends up on the island. Also, the items he chooses were a hunting knife, a compass and a little bottle of what I think is herbs. The weird thing is, they did belong to him in the future but how would his younger self know? There was already more to John Locke than meets the eye but this is really something to think about. I hope this is answered in series 6 because it is really important. Unless anyone already knows then they could pass their theories onto me.
Thanks.