That wasn't what Bastien was getting at though. One of the first signs that a Contact got was the dreams. Sometimes that was even where they formed the pact--- you work out that the spook haunting your dreams is benign, and you work something out. Not the best way to do it, since most people don't have their wits about them in dreams, but not nearly the worst thing that could happen. Not even close.
Sometimes the things in your nightmare are the real deal, and you don't figure it out fast enough. That was how Mals happened, sometimes.