Prognostic (I spelled it wrong!) just means knowing something beforehand. sometimes i dream about little insignificant things that I see or that happen the very next day. Sometimes larger things, like once I dreamed about a tornado. First thing the next morning I turned on the computer and the first news item was a tornado that had taken place that night morning. When my stepmother died, she came in my dearms as a child who told me that she was dying. She died the next day. Lots of different variations on that kind of thing