To Sleep, Perchance to Something-or-Other

1. Snorting a Brain Chemical Could Replace Sleep — Orexin A is a promising candidate to become a “sleep replacement” drug. — Yes, that says replacement.
2. Dreams: Night School — Finnish psychologist Antti Revonsuo believes . . . [d]reams . . . are a training ground in which animals and people alike go over the behaviors that are key to their survival. Prevented from dreaming, the rats were unable to rehearse their survival behaviors. In other words, they were defenseless because they were out of practice. — So, that sleep replacement thing: Good idea? —