Most of the students had no problem recognizing that there was something that they needed to go around, and did so accordingly. Not Herman, though. I watched as he approached the truck and went right up to the front and center. He then stopped, took several steps back, and rammed into the truck with his shoulder a full force.
"Herman!" I yelled, "What do you think you're doing?"
"Oh," was his reply, "I didn't see it."