> That's the entire point of the radar system, to "fix" the alleged blind spot problem.> The problem doesn't exist if people were just taught how to properly adjust their mirrors in the first place.
The problem being solved here is that, no matter how many mirrors of any configuration one has, they are still a squishy human who will eventually make a mistake, given that mirrors are used hundreds of times per driving trip. Or they bad-luck into a situation where another driver changes the situation faster than a reasonable, human mirror-checking regimen would reveal. These systems add a layer of safety for when, not if, that happens.
