I'm of the opinion that the supernatural is an invention of the human mind, in that I don't believe in the supernatural superceding experimental conditions, but I also respect that that these beliefs interact with human behavior and society.

Like, I don't believe that voodoo has an invisible supernatural ability to control others, but I believe in its power amongst humans beings. If everyone around you gasps and backs away because of a "curse" laid upon you, it might as well be real in the interpersonal realm.