I read once that this was a factor related to such things as remote viewing and psi etc. Is there such a brain wave state we all enter into and all share. More to the point, what is the supposed frequency of this wave. Say, for example I could "remote view" you in your kitchen, then why can't I enter your dreams. I guess this is falling into the relams of pseudo science but if anyone has ever tried "automatic writing", I am sure this shares a similar principle. p.s, Automatic Writing does work, for me anyway.