Magic has yet to hold up to the scientific method. Science does. Of course, that's kinda self-reflexive, and science certainly doesn't hold up to the magical method. But everyone knows science is objective. Everyone knows that...

Actually, I really liked Storm Crow's post. I don't practice witchcraft so I don't want to belittle any beliefs but, it seems that the entire purpose of any ritual, whether it be white magic, shamanic trance, or buddhist chanting, is to change the subjective state of mind/perspective of the individual undergoing the ritual. Changing the world by changing the way we see it, and selecting new possibilities for being. Largely psychological, yes, but illusionary? Not at all.