You answer your own question here, but since you might not realize you did... You said: "Blind spots can be very small if the mirrors are well adjusted, and th

You answer your own question here, but since you might not realize you did... You said: "Blind spots can be very small if the mirrors are well adjusted, and then turning your head allows you to fill in the blind spot." Nevermind what a driver should do, features like Honda's system can save the lives of people who do not use best-practice driving techniques. This describes most people.