I heard about dreams that foretell future before, and I practically believed it when I was young. However, as I learned about the causes that create dreams in my high school, I began to distrust the foretelling ability of future. In high school, I learned that dream is some kind of illusion that is made in the process of our brain transferring short-term memories to long-term memories. But exact process of dream formation during this shift is not yet discovered. This uncertainty is a point that still leaves me tiny bit of belief that dreams might foretell the future. I hope I could experience one of the foretelling dreams, since I've never experienced in my whole life.