== LOCK THIS PAGE so that only registered users can edit it == 
 Sure, it may not be a high target for vandalism, but vandalism of this article could hurt people.  Lucid dreaming is something anyone can ATTEMPT after reading this article, and if someone added some vandalized false information, then people might attempt to use the false information if this was their first time reading the article.  It's not that hard to sign up for wikipedia, so the anonymous people have nothing to bitch about.