ANCPER
You need another Brain and Experience with you to pass ideas and strategies between the crew ,which requires a certain CRM to manage modern airliners.Therefore it is necessary to have at least 2 crew.Many times with Fog or Heavy Turbulence or Thunderstorm Activity,another set of views was very important to help the decision making.A long time ago the "Bomber" pilot Captain went to other pastures,and proper CRM exists today,so careful consideration of what is happening or could happen requires much more than a set of computers,that can only react to events not anticipate!The "What on earth is happening now"?scenario with multiple computers running the show,seems only too common amongst certain Aircraft Fleets,not naming a manufacture in Toulouse!!