I've been hearing and reading people say that the persons you meet in your dreams are people you have seen in real life.
And also that the brain isn't capable of creating "new" faces.
I was wondering if there is any info on this to back it up, since I've only heard people mention it and I can only find these things being mentioned in those lists of random facts.

So I guess I just want to know if it's true and if it is where can I read more about it.