Ever tried to back out of a parking space when you have two big cars on either side of you? You know, minivans, pickup trucks, that type of thing? You can't see a thing. Of course you have, if you are old enouhg to drive.
So what do you do? Well, you make sure there are no pedestrians behind you and you start backing up verrrrry sloooooowly. You back up a little bit and check again, you back up a little bit and check again. Eventually you are far enough out that you don't have to worry about pedestrians anymore so you just start slowly backing out since there's nothing else you can do.
All of a sudden a car flashes behind you causing you to experience a rush of adrenaline and slam on the brakes. What should that person have done when they saw you actually backing out? How about wait for the eight seconds it would take you to finish and pull out of the way?
Orson Scott Card wonders who should have the right of way in a parking lot and then (correctly, imo) concludes that it should be the person backing out of a blind spot, as they have no other option.
So what do we do about it? Well, if you are driving through a parking lot you could start by yielding the right of way when you see someone backing out. Then you could tell your friends. Maybe you could put on a pair of footy pajamas, make yourself a cup of cocoa, and talk to your family and friends about parking lot etiquette.
Naw, that would be creepy and weird.