This is from a thread on RPGnet where the poster(s) talk about how to use Carl Sagans explanations of cosmos and the fourth dimension to get how the Cthulhu cosmology works. I think he is dead on with this!
[CoC] Carl Sagan Helped Me Understand - RPGnet Forums: "So, now I understand that many mythos monsters move through more than three dimensions, hence they would have a constant and terrifying undulation to their appearance, with different parts appearing, moving, and shifting in an unpredictable fashion, including occasionally going completely invisible. This also makes the Powder of Ibn Ghazi make more sense."
