People Vs. Richard Moore

The Exorcism of Emily Rose is not another exorcist movie, it's a quite well elaborated movie that makes us reflect about faith and science. Throughout the centuries people have exorcised their demons through rituals and prosecutions. With the fast advances of science in the 20th Century there were no more place for demons, possessions or heals through faith. Fact is that science enlarged our lifetime and quality of life. But is there a thin line where science should abstain to proceed? Or was faith and ancient rituals just a way people had to deal with mental disorders when there was no other explanation available?