For centuries now, perhaps even millenia, science and religion have clashed in regards to the post-mortem. Typically, the former dictates that the dead become cadavers, while the latter dictates that they become ghosts of some sort. Science has quite consistently been considered the realm of atheism and agnosticism, often disregarding religion as blind faith. However, aside from the fact that a lack of proof does not constitute a presence of disproof – a concept that every intellectual revolutionary has grasped – there may be a significantly larger irony to such an accusation.
Our known universe exists in three spatial dimensions and one chronological dimension. We continuously move unidirectionally in time, though the rates vary with velocity, and are generally able to move in any number of the three spatial directions. According to string theory though, the most widely accepted work towards a unified theory of all levels of physics, there may be as many as eleven dimension, ten spatial and one chronological. In fact, the existence of other spatial dimensions has been proven on paper, and many a physicist has postulated on ways that matter might move along these other dimensions.
What we’ve also found, at least on paper, is that this presents the distinct possibility of multiple universes, some separated by mere centimeters in a humanly imperceivable direction. It has also been theorized that alternate universes spring up as a result of atomic decoherence, with one universe continuing to house the object in question and the other existing without it, to put it in simple terms. Think of it as Schroedinger’s Cat meets Theoretical Physics, where the cat is alive in one universe and dead in another. Regardless of whether they exist due to decoherence, the existence of multiple universes has been mathematically proven.
Next, consider a far more basic concept. Energy and matter can be converted from one to the other but never created or destroyed. A thought is pure energy. With every thought, every motion, every idea and every twitch, electrical impulses are firing between synapses. Even without active thought, this electrical energy is still at work both in maintaining bodily functions and in absorbing and analyzing stimuli both past and present as well as anticipating the future. This is known as the id, and it essentially defines who you are psychologically.
In fact, the id could be likened to the soul. It is the most definitive essence of self, able to be masked, but never truly changing without a much greater effort. So, while the body will decompose and feed the nether-regions of the ecosystem if left be, the energy of the id does little to provide sustenance. This energy, as aforementioned, can’t simply cease to be and therefore must dissipate.
Now, while we’ve yet to find a way for the physical to move beyond the three spatial dimensions of our universe, there’s little to be said of the metaphysical. The energy of the id is incorporeal, unbound by physical form. Thus, perhaps it is able to move in one of these additional directions, effectively crossing over into an alternate universe.
Even if it cannot, it still stands to reason that the energy of the id, the scientific soul, continues to exist in some form after the body dies. It may dissipate over time, or it may hold together for the most part. The latter could explain the handful of ghost sightings that have yet to be proven as hoaxes, as those who knew the person best could be influenced by a feeling of the departed’s unique id.
Admittedly, this is all just postulation, and some may disregard it as nonsensical rambling. But with what we know, this is within the realm of possibility. After all, the unproven is not disproven.