So from 30 feet away I made a swift judgement. This guy transports chairs, and he has at least two chairs in his truck. I had all kinds of visions of the office that he was a contractor for - one with at least two chairs and a desk. As I got nearer, I could now see the truckbed clearly. Both parts belonged to the same chair, but for some inexplicable reason this dude had separated the base and the back of a brand new chair and was transporting both in his truck.
Nevertheless I was reminded of the extreme importance of forcing the mind to formulate alternate hypotheses for every possible scenario (as a scientist), and the value (as a physician) for always having a list of differential diagnoses. My absolute belief that there had to be at least two chairs prevented me from even considering that both the back and the base could possibly be part of the same chair. Hope that guy found a way to put that chair together!