Natural Sounds Advice

I thought early on from a demonstration in class that a photo documentar with natural sound gave the illusion of watching an actual movie. After reading the nat. sound advice column I realize that the effect was mostly the sound. I enjoyed the column, but I would have liked a little more explanation of how to handle 'implied' knowledge in the presentation- things you know because you shot the project, but that the casual observe might not know.
Also, after doing the radio story with the natral sound, I was surprised by how many problems there were in piecing the story together with the background sound. I was kind of surprised that the column didn't have more to say about that.