http://cnn.aimtoday.cnn.com/news/story.jsp?idq=/ff/story/0001%2F20041211%2F1726283686.htm&sc=1110
Read that first. Tell me what you think. I personally think that sometimes it fails. The inocent man goes to jail, while the guilty man is still outside comitting crimes. As you can see in that story the faulty jury destroyed the life of a man.