Nice acting and setting but parts of story very illogical

Rating: 2/10 (11 January 2013)

Parts that don't make sense:
1)John was aware of his predicted faith for so long. Why was he so afraid of it? At the beginning he clearly told the cop-guy that the Pre-Cogs only made predictions and that they could be false if someone with the knowledge of the future intervenes.
2)At the end, how did Lamar know that the Pre-Cogs would predict him to murder John. All he knew was that the Pre-Cogs either would have predicted him to kill John or not. If he would have seen a police-helicopter or something it would have been understandable.
2 out of 10 because I really dislike stuff like that.