Some of my dreams are absolutely predictive. Some of them have predicted things that I had no possible way of anticipating. I pay attention to those kinds of dreams. They have a powerful emotional content that nags at me until I do something about it, and the feeling goes away after the issue is addressed. Several times they predicted something that would happen to my son if he continued along a particular path (which I was unaware of prior to having the dream), and each time, when I told him about the dream, he knew exactly what they referred to in his life, and in each case, he took corrective action and averted a big problem.