"The overriding theme, prevalent in occult literature, is that our universe is permeable and can, under specific circumstances, provide a channel to unseen realms (an idea that's remarkably similar to contemporary thought on wormhole travel). Of immediate interest is Aleister Crowley's "Lam," a "magickal" entity who bears an uncanny resemblance to today's "Grays." Unlike Lam, who functioned as a mentor and paraphysical guru, the Grays are typically assumed to be dispassionate ET scientists; if Crowley were practicing his consciousness experiments today, would he be greeted by dome-headed beings in skin-tight jumpsuits? "
- Mac Tonnies, PHB post 5/13/05
Hmmm... a good question. For a further exploration of "Lam", I recommend this article by Ian Blake, found on Greg Bishop's The Excluded Middle magazine site.