The story may depict everything that we need to work with, but we must still relate it with our own experience.
If I showed Twin Peaks to my three and a half year old son, for example, he would be extremely disoriented, because it is not a matter of simple cause and effect / action and reaction like so many stories are. It deals with metaphysical, spiritual, and transcendental issues that span multiple realities such as the waking world, the dreaming world, and alternate or parallel universes.
With that said, Twin Peaks is a two-way road when it comes to interpretation. In one sense, it says, "Hey, in this mysterious life we lead, there's more than meets the eye. Think on it, dream on it, see what you can find". That's the stuff that originates in the minds of the creators before traveling to us via one lane of this road. Inevitably our perspective is grown and shifted.
The other lane delivers concepts and feelings and beliefs that originate in our own mind, being derived from our own life and dreams, and projects them onto elements of the narrative. We basically take what we've experienced and we "check it" against the things we witness, attempting to connect our own truths with those professed by others.
This lends an interactive dynamic to the experience, creating a sort of "send and receive" game in the mind and soul -- an enthralling ebb and flow that persists long after the story has been told.
While a great depth of knowledge regarding dark arts and occultism surely cannot hurt when seeking the keys to comprehension, it is our own personal exploration of "the unseen" that is the key to an individual understanding of what's transpired.
Another's truth is just that -- the sum of a single person's unique experiences, dreams, thoughts and actions. It would not be advisable to rely solely on the perceived authority of another in order to conflate the intangible or multi-layered aspects of things we do not fully comprehend. Doing so would be like attempting to decipher one's dreams by way of a stranger's interpretation. Dreams are too personal to be fully understood by anyone other than the dreamer, therefore we must take the words of others as a starting point or guide that grants us one more approach to the truth.
Regardless of what is really going on here, I believe that these possibilities alone say something profound about the nature of the story we have been told. In fact one might see this as proof that its underlying themes and implications are an actual conveyance of lesser appreciated aspects of reality. Beyond the powerful and visceral impact that is imparted at first blush, analysis and dissection in the heart and mind only serves to further illustrate the existence of deep and far reaching truths conveyed throughout the journey. Otherwise, these things wouldn't continually resurface to entertain our curiosity.
This is where discussing these matters becomes somewhat difficult for me. I have experience with some of the things depicted in the story, but find that openly sharing such personal matters with strangers does not come easily. However, no shared understanding can materialize between myself and those with similar experiences if nothing is spoken aloud. This is a problem separate from interpreting the story at hand, of course, yet it still presents a personal barrier to conclusion.
Note: Someone just walked by wearing a "Who Killed Laura Palmer?" shirt while I was writing this.
Not taking any calls.