I could, but this is not only a Bioshock thread, but I've also detailed my gripes in other threads in the past... =)
Back on topic, one thing I really like about this game is that enemies "respawn" in a really convincing manner...You could backtrack to an area and you might see an enemy enter into the room from another entrance, giving the illusion that they've just wandered in from another part of the city...(Or sometimes they might come in behind you a minute later...One time, I entered a room, ransacked some goodies, and turned around to find a Splicer coming in and being surprised by my being there...Neat stuff...)