There's nothing ambiguous about where you can find the Hi-Ho crackers. And Lengel is a Sunday School teacher. In Sunday School you learn all the answers. There is right and wrong. Everything has it's place.
All questions have correct answers.
Sammy, the protagonist, is restless. Unlike his co-worker, he doesn't have a wife and family. His view of those exposed shoulders will be the only exposed shoulders he sees that day. The store is rectangular and everything is divided in numbered rows and lettered sections. If there isn't a place for it, it doesn't belong.