Thanks mm - that makes sense..unless......
I'm not sure the NASA paper adds much, but I think the last two ??NASA?? findings are important
•Extensive reliance on automation for normal operations can undermine a time-critical, successful operator recovery from an off-nominal event.If there is a manual mode, operators must become and remain proficient in its use.
•There is no single right answer to the issue of human control versus machine control in human-machine interfaces. But as the need for human intervention follows the value of the system, the need for high-fidelity experience in compound failure scenarios, not just a single component or feature, becomes essential to timely action..