All I have to say is that if airlines ever switch to computer-only flights I'm taking the bus. There's no algorithm, programming, or any other fancy mathematical concept that I don't understand, in this world that would give me peace of mind at FL350 going .80 with a computer in charge. I'll stick to the risk of pilot error. My computer has crashed way too many times for me to ever feel comfortable with this in my lifetime. At least when humans are "crashing" there are signs of stress, depression, anxiety, fatigue...