Your post is almost a carbon copy of what one Neuropsychiatrist spoke to me about the other day for 4 hours adnausem. Was not denying the possibility and said science is always there to be disproven but at the same time started getting into electrical charges and why people see white light and images when they die. Just the brain shutting down. The spectrum of how deep one can take Holographics is a new way of research and thinking for me right now and I have to be honest...I am looking for some solid base on where these scientists are signing up left and right now to this theory.
... well at least I didn't spend 4 hours responding ...
I would encourage you not to confuse the sense of awe at how far beyond our feeble minds would be a full understanding of the universe, with the sense of wonder at a mystical, intriguing sounding theory that would claim to explain the universe so much better.
The former is well founded in my view, whereas the later but a mirage in the desert of our mind.
Everything physical is made up of just three fundamental things: a bit temporal, a bit spatial, and a bit of energy; the mix of the three variables makes the cake, or stew, as the case may be. Ever thought of a photon as a packet of energy existing in present time and linear space? Could an electron be a packet of energy existing in past time and linear space? Is magnetism the result of energy in present time or future time and planar space? Could we say gravity is energy in present time and volumetric space? [I can hear the poo pooing already! But if you consider that dimensional space, dimensional time, and energy are all that the big bang came to express, there just maybe continuums of spatial and temporal mixes that we have yet to even consider.]
HINT: when a light beam reaches your eye, or your measuring device, it arrives as a packet of the present of the source from whence it has left to arrive at some where/when. Did the bang start by expressing linear space, then planazr, then volumetric? Did time also go through staging, leaving continuum mixes of linear/past, linear/future, planr/present, planr past, planar/future, volumetric past, etc., to muddle about within the matrix of three variable reality as we experience it?... There may be others who do not experience reality the same limited way as we.
[I'm fond of saying the presence of the Angels is no further away than the length of a man's arm, or so it would seem when reading the Book of Daniel.]