As far as Ockham's Razor, for pratical purposes it works well. Still not following how it reaches conclusions in regards to discussions revolving around supernatural entities.
Occam's Razor doesn't reach conclusions about the supernatural. The Razor is used to temporarily eliminate certain unlikely possibilities to better focus on the remaining possibilities which have been deemed
more likely to be correct. More specifically, possibilities which require the invention of something that has yet to be theorized or possibilities which require a further layer of investigation should be eliminated from the research until the more simple and likely possibilities have been explored. Should they turn out to be incorrect, the previously eliminated possibilities will be reevaluated.
For example, say I'm eating cookies while watching TV on Christmas Eve. After eating my fill, I leave the remaining cookie box on the table next to my chair, forgetting about them when I go to bed. The next morning, I find the cookies have disappeared!
Popular folklore would insist that Santa Clause had been in my livingroom some time between my going to sleep and my awakening.
On the other hand, I have a roommate who frequently kills the bottom of the cookie boxes in my absense.
I also have two cats who are notorious cookie bandits, especially in the dark when nobody is around to yell at them.
Here I have three theories to work with. Which one should I pursue first?
Occam's Razor would temporarily eliminate the first theory, since Santa Clause is not currently accepted as an actual entity. To examin the Santa theory, I would first have to investigate and prove (or disprove) Santa's existance. Since this path would be far more difficult to explore than the two other theories, we'll simply set that one aside for now.
The second theory is worth exploring, since it is relatively easy to investigate quickly. I knock on my roommate's bedroom and discover he isn't home. I remember that he is in California for the holidays, and I spoke to him eight hours ago when he called from there to remind me to feed the cats.
Knowing that it is highly unlikely that he would have travelled that distance in that amount of time, Occam's Razor would again slice that theory from the table. It would require extreme circumstances for this theory to be true, so we'll instead move on to theory number three.
Note that we haven't ruled the first two theories out; we've simply set them aside as
not yet worth pursuing. There is still one more theory, and this theory is quite simple to investigate. It is far better to quickly investigate this third theory, (which can be completed in seconds), than to waste time by first working on the two theories that we already know are far less likely.
Theory number three, the cats. Remembering that I hadn't fed the cats the night before, I peek behind the table. Not surprisingly, the box is on the floor. Upside down and surrounded by scattered crumbs, the box rests next to a sleeping cat who still has a cookie crumb in his whisker.
At this point, I think it's safe to conclude that the cat ate my cookies. Had I instead decided to pursue the Santa Clause theory, I would still be quite far from finding out where my cookies went. Thanks to Occam's Razor, I went with the most likely theory first, and saved myself centuries of investigation.
Here's where the Razor affects supernatural theories...
For every event that has been investigated, there can be mundane theories or there can be supernatural theories. In every case, the supernatural has been shown as far less likely to be the true theory and far more difficult to investigate. So, the mundane theory is the first one to be investigated. So far, no case has required the supernatural theory to be reevaluated.
Simply looking back and seeing that the supernatural has yet to be shown as a) existing and b) the correct theory, we can easily eliminate the supernatural theories from future investigations. This doesn't say anything about the supernatural other than it has yet to be shown as necessary to explain anything. The Razor rule says nothing about the supernatural itself, only that supernatural theories are less likely and should not be the first on the list to evaluate.
This example only attempts to give a layman's explaination on the function of the Razor. For more solid explainations on the Razor and the man behind the name, check out
http://skepdic.com/occam.html
Or do a websearch.
You really need to get over yourself.