I've been in search of a better explanation in the understanding of what's really going on behind such oddities as the double slit experiment and the strangeness of quantum theory in general. I know in the learning process we are told to "just accept" what we see and move on, as the quest to understand the seemingly impossible could ultimately lead one to a life-long quest of madness and wasted time. To me, oddities such as the seemingly impossible results of the double slit experiment is but a reminder that there is so much more that science has yet to discover, and that a full understanding of what is happening here is based - at least in part - on unknown science.
Since I was a kid, I never accepted the idea that our Universe is composed of three dimensions of space. As I grew up and learned about Einstein, the ideas I had about extra-dimensional space were strengthened and supported with his theories, in my mind. For example, Einstien's explanation of time as the fourth dimension made me think he too had the same, but incomplete, concept. Nothing I have learned to date contradicts a core belief I have that time is an effect of dimension(s) unseen, not a dimension in and of itself.
All the oddities of quantum theory could also be understood when analyzed through the perspective that Universe is not is as it seems and there are at least one other physical dimension that has not been considered or calculated into accepted equations. Having a "hunch" is not an accepted method of scientific research, which is why I have mostly keep these ideas to myself, but I think I have a strong "hunch" regarding an explanation of the double slit experiment when applied to a realization of unseen extra dimensional physical space. If I am wrong, I want to know why I am wrong with cold hard experimentally measurable facts, rather than personal attacks such as "you're stupid" or "unknowledgable". All I want to know is if my thinking is compatible with Universally accepted knowledge on the subject, or not.
Before I begin, let me state that there could be other extra dimensional explanations besides the one I am now proposing. In the double slit experiment, when the sub-atomic particles are observed, the particles seem to behave as if they know they are being observed and randomly chose a slit to go through to. In order to observe, there must be light. Since photons are light, there are now two sub-atomic variables at play here: the particle being shot at the slits and the photons of the light enabling its observation.
Now, consider the possibility that we see only one 3D dimensional side of a given subatomic particle at any given time and that subatomic particles are objects which occupy more than three dimensions in the space they share with us. In effect, when we see a particle, we are seeing just one "flat" 3D surface of many 3D surfaces belonging to these objects that we are not seeing.
Now, imagine two four dimensional 8-"sided" dice (each side is composed of a 3D 4-sided cube). Shake the 4D dice in a weightless environment. Let the dice's own gravity bring the two together. The 3D surfaces of the adjoining dice as a cube to anyone occupying that 3D space. The other surfaces of the dye are not seen by anyone in that 3D space. The two particles interacting in the double-slit experiment are similar to the dye in my discussion here.
The photons giving us light to make the observation illuminate just one of many 3D surfaces of the experiment's subject subatomic particle. Other "sides" include the other slit, which we have not "observed" it going to. We do not see this other 3D surface of the particle because we will always and permanently occupy the 3D surface space of the "forward" 3D face of contacting photon. The rest of the subatomic particle which is the subject of the experiment is unobservable because it is outside our 3D "point of view", but neverthelessless within space occupied the second slit.
I may be way off with this, but I think it could be closer to a real understanding than some other "mainstream" ideas I have heard of late, such as the idea that particles go back in time to pick a slit to go through at the moment of observation. The idea of subatomic extra dimensional space sounds far less "kooky" than the idea of time traveling observation-conscience particles, IMHO.