As a pedestrian, even saying "On your left" doesn't actually mean anything to me. I'm going to turn around and look, because I can't tell which way is left in

As a pedestrian, even saying "On your left" doesn't actually mean anything to me. I'm going to turn around and look, because I can't tell which way is left in less than a second, then jump in a random direction in an absolute panic. There's also a chance I might move right in front of you because I decided to move instead of look and got the directions mixed up.