On March 29, 1984, I went out to Coast Guard Beach with a Boston television crew from Channel 5 to videotape a program about barrier beaches and how they cope with storms and erosion – part of their series on “Survival.” It was a cool, dry day, and the crew had set up on the parking lot overlooking the Eastham barrier beach, still recovering after it was smashed flat six years earlier by the “Great Storm of ’78.” I was interviewed by a friendly man with a boyish face. He told me that the