I had a dream that I was in a basement looking for papers in a stream of papers that had been contaminated by sewage. I was wearing all the gear (including gloves, of course) to protect me. But, it was an unpleasant experience.
Later in the day, I developed some digestive upset. The dream preceded the illness. Cause and effect are difficult to decide here. Did the dream cause the illness, or did it merely predict it? Whatever the case, the dream was what economists describe as a “leading indicator.”