Aka is a Hawaiian word that refers to the essence of matter, or what might be called the "Universal Matrix." It is related linguistically and conceptually to the Sanskrit akasia and can be thought of as the Hawaiian equivalent of the Akashic Records. It can also be compared in some ways to "astral matter" or "etheric matter."
Esoterically, aka serves two main functions. One is to take on form in response to thoughts. In other words, the idea is that thoughts give form to the aka. The weaker the thought, the less substantial the form; the more intense the thought (i.e., the more energy that accompanies it), the more substantial the form. It is for this reason that the Hawaiian word for physical matter--kino, which is usually the term for the human body--can be reduced to its roots and translated as "a highly energized thoughtform (ki=energy or force; ki'i=image; no with a macron over the o=an intensifier; no'o=thought)." The second function is to act as a perfect medium for the transmission of energy.
There are different ways in which this can be understood. One way is to use the concept of aka threads.The idea here is that whenever you think of a person, place, or object, you send out a line of force through the omnipresent aka, a portion of which forms itself into what can be called an aka thread. Through this thread you can then send or receive ideas and/or emotional-psychic energy, and information from any of the senses.
A further concept along this line is that whatever you come into contact with through any of the senses results in the automatic creation of a "sticky" aka thread that serves as a continuous link between you which is activated by thought and which makes future contact easier. The people, places, and objects with which you have the most contact produce a multitude of threads, which serves to explain why mental contact is easier with them. It also gives rise to the shamanistic symbolism of a spider web to illustrate these connections.
However, the above is a simplistic and pragmatic teaching which serves the needs of non-technological people. If you apply it as a hypothesis it will work as a practical way of thinking. But there is a more refined approach used by some present-day "Hunatics" in regard to the psychic links between persons, places, and objects. This approach teaches that within the universal aka field are an infinite number of individual aka fields. Furthermore is the idea that the aka field of every physical thing acts like a radio/television transceiver. It radiates or broadcasts its own unique frequency or energy pattern and receives and retains impressions from other patterns radiating toward it. When you pick up a rock, for instance, the aka field of the rock retains an impression of your energy pattern and your aka field retains an impression of the rock's pattern.
Thereafter, no matter where you are, when you think of that rock it is like tuning in to a unique radio/tv signal and establishing a resonant link with it. If you concentrate your thoughts on that rock, it is then like beaming a specific signal of your own, or "sending out an aka thread."
The more energy associated with such contacts, the stronger the impressions received or the signals beamed. The strength of the impression depends on: (1) the nature of the contact (physical touch leaves a more energetic impression than mere proximity); (2) the frequency of contact (a high number of contacts leaves a stronger impression); and (3) the amount of emotional energy present during the contact (handling the rock while in a highly emotional state would result in a stronger impression).
Thus, in picking up objects handled by others, the first and most powerful impressions received would be those which had been impressed with the most energy. Similar principles apply in beaming thoughts outward. Continuing along these lines, we have the idea of aka experiential memory fields. This would mean that the experiential memories of individual people and things form fields that continue to exist even after the physical forms are gone. It would also mean that similar fields could resonate with each other and form what might be called group fields. This could be used to explain things like electronic technology products were difficult to understand and absorb by adults when they were first made available to the general public, but today seem to be second nature to children as young as three.
Of course there is a strong resemblance to the theories of Rupert Sheldrake in all of this, and that makes it more intriguing. More important, though, is the fact that this admittedly hypothetical system can be put to practical use for teaching and learning just by assuming it's true and finding ways to access these fields through such practices as meditation, self-hypnosis and creative imagination.