During college, I worked as a bank teller. Obviously, that position requires some very specific training, including how to remember details when witnessing any criminal activity in the bank. During the week-long training class, around lunch time, a man walked into our class and presented something to the instructor. He said very little to her, did not address the class at all, and then left the room. About an hour later, in the middle of the lesson on how to handle a bank robbery, we were asked to provide a description of the man who’d entered the room. There were roughly thirty people in the classroom and not one of us produced a description good enough for a sketch artist to draw a likely representation. We were in a safe, well-lit room, experiencing no stress or duress. Yet, we could not remember enough to convict our would-be criminal.