Do you think things should be explained and how things work (once again a clumsy question)? For example, explaining why silver kills werewolves (the Lycantrophy virus attacks the silver and thus is leaving the human being, making him a normal human and vulnerable to the attacks), how magic works, how the great demon "whatever" was born, why the "whatever" creature follow someone orders... Do you think it makes the story a bit more realistic, or does it take away a certain something away (the magic, the fantasy)?