Proof that People Never Look Up

Here is total proof that people never look up. I was standing on the bridge over the harbor, and I saw the excursion catamaran coming from a lot way off. I stood on the highest point of the bridge and waited for the catamaran to pass underneath. The passengers on the catamaran had ample time to see me on the bridge from afar, and yet no one looked up at me.

This is proof that people rarely look up in their environment.