My point is that computers make better errors. The limitations of the software architects and programmers are inherent in the system they build. One small thing that is unanticipated happens and the whole thing can spin out of control. A human are able to do analysis and invention to overcome an issue on a far better scale.
I have made enough mistakes in software myself to know this

I want a human with real intelligence to supervise and monitor the situation and to take over with override on all automatic systems. I dont want these human pilots to have to be software and instrument experts to be able to interpret the situation. I dont want the pilots to become complacent and rely too heavily on the computers either. Air France flight 447 comes to mind as en example of human - computer interaction problems.