The mirror is the self-image of Man, the most powerful creative force in our realm. Freud explained it best, he said we stand in the mouth of a cave forever looking inwards seeing our shadow and the shadows of those around us projected onto the back wall of the cave. All of our interaction is with the shadows we see in the cave, because we never find it within ourselves to turn around and see reality as it truly is.
The all-seeing-eye is also part of the makeup of Man. However we are trained from childhood to focus our all seeing eye only the self reflection; to look inside the cave. Our entire society reinforces this. We deal entirely with descriptions of things, instead of dealing directly with the essence of things, which we can achieve via silent knowledge, which is the true opposite to everything which is described with words.
It's possible to use a physical mirror to bypass the normal self-reflection process and access everything else the human psyche is capable of seeing. It's also possible to do this without an external aid for example by meditation. However every good spiritual school advises caution and sobriety since the untapped part of our psyche is so much larger and more powerful than the part we are conditioned to use in normal daily life. So for example if you train to release your own self-image that may take many years of practice to attain. Then afterwards it might take decades to integrate into your normal experience.
Akasha simply means 'Sky' in ancient Hebrew. Funnily enough, look at it and if you put the words 'Sky' and 'Aether' together you pretty much get akasha. Look at the following group of words - Sky - Scry - Science etc. Also old English 'Ken' meaning to know, which is also the rune / letter K in Norse, pronounced Ken, meaning Knowledge. Cen in Nahuatl (Principal Mexican language) means One, everything, all. I've often wondered if All in English meaning everything is the same word as the word Allah (Islamic)
Tezcatlipoca means black smoking mirror in Nahuatl, poorly or deliberately misunderstood by Western historians to be one of the Aztecs' principal deities. The origins of Tezcatlipoca are much older, go back at least to the Toltecs. Tezcatlipoca is your connection to the one energy, Centeotl, All that is, ever was, and ever can be. Tezcatlipoca is represented by three concentric circles with a grid filling the centre circle. The outer circle represents the self image. Hence the self-image is your first access point to the one energy.
The inner ring represents the void, which is infinite, and is where you get to when you let go of the self image. It's called the Astral plane in our Western tradition from the Greek Astra - star. Sounds like Akashic again. Or the verb to Ask. Or Seek. All hidden in plane sight.
The inner circle is depicted as a grid, which represents the positive energy matrix that one must be connected to to achieve self realisation / actuation.
You can also see in this representation how the inner ring (our connection with the Astral plane) is blowing smoke into the outer ring, which is our self reflection. The outer ring is broken, it is not infinite. It is our self image. The inner ring (represented by the two innermost circles) is a complete ring, it is infinite.
Note that Teztatlipoca was the third thing to be created. Centeotl (the one energy) first created Ometecuhtli and omecihuatl (Mr and Mrs Two), who then created Tecatlipoca, But that's another story.