To Sleep, Perchance to Forget

This is an interesting piece but I find it baffling and sad that an article on this topic fails to mention who first came up with the idea that dreaming may be caused by an "unlearning" process where the brain cleans up the memories it has formed recently. It was Francis Crick - of Crick & Watson double helix fame - who, having nabbed the Nobel for that discovery, spent the last few decades of his life at the Salk Institute thinking about the brain.