When you are in a hurry you can make the mistake of looking without seeing.
Many years ago in my cage I was in a rush as I came to the stop sign at the end of my street. Preparing to make a left turn, as the cage came to a stop (a COMPLETE stop) I glanced right, then left. Seeing no cars, I started off fairly aggressively. Something in my peripheral vision seemed wrong and I jumped on the brake just as a pedestrian got in front of me. I was stunned! The pedestrian SHOULD NOT have continued to cross, but he taught me an important lesson. I looked right past him, because I was looking for cars, not people. There are no sidewalks on the road and there are NEVER any pedestrians on it. Almost never!
I consider myself a really good driver, and I take driving very seriously. I realized that if I can be so careless, lesser-attentive drivers are more of a danger then I ever imagined.
I learned 2 important lessons that day.
1 - When you look, see everything
2 - You really ARE invisible, especially if you are not what the person was looking for.
Everyone makes mistakes, dopes just make more of them!