I watched the theatrical and 'extended director's cut'. Both have flaws, the theatrical just has more of them, and no Ethan Hawke. I had no identification with any of the characters before the sci-fi and action kicked in proper, so the stakes were always low. Thin characterisation and implausible motives, pretty much across the board, reaffirm the innate unnecessary nature of this film. Somehow Arnold Schwarzenegger was more convincing as an everyman than Colin Farrell.