Such a system does not solve the problem. First, the system would be vulnerable to many of the same problems: hacking, sabotage, and electrical failure. Second

Such a system does not solve the problem. First, the system would be vulnerable to many of the same problems: hacking, sabotage, and electrical failure. Second, it would likely not be as robust under less than ideal conditions in which human beings with a sextant would still be able to function (e.g., partially cloudy conditions).