Imperfection is a feature, not a bug

Were the drivers involved in these cases, to one degree or another, knuckleheads? Absolutely. (I include myself.) However, the world is full of knuckleheads, and if fixing mistaken directions can save them from themselves, it seems incumbent on the navigation companies to fix them.

Exactly. Any system has to take into consideration humans are human, including per a recent debate I had, the idea that the pope can be totally infallible about anything.