The task requires an experience of the process itself, and that includes a way to identify the mechanisms of mind that produce the results. By that I mean the acceptable proof that the individual is being related to, not collectively but as a specific person.
An example is that an inner event happened to me when I was 13 years old (1945) that was retrieved into my mind in 1984 exactly as I had originally experienced it. I had forgotten that event until it was retrieved but the significance of the retrieval did not occur to me then, as it had not in 1945. It was so unusual that it should have made a deep impression that day, but I gave no thought to it afterwards.
There are many authors who begin their book with a description of something that happened when they were very young. These early life events seem to be installed for later use, C. G. Jung described several that happened when he was young, one of the most significant (in my opinion) was when one day he imaged a giant turd falling over the church of Basel.
The term 'holy shit' might have some reference to that event, once the term is linked to Norman O. Brown's chapters in Life Against Death that are about the excremental vision of Martin Luther. I was shocked literally when I read that revelation had happened when he was 'on the privy in the tower' and that the 'internal sense' of Jonathan Swift's Gulliver's Travels is quite different than the fantastic story. I read with that the excremental vision really began in a privy but it relates to a modern pattern, anal retentive, associated with toilet training, of being literally 'up tight'.
The 'internal sense' (or the hidden level of meaning similar to Swedenborgs' version of stories in the Bible) of that book is not obvious to anyone that reads it with a normal sense. I believe from my experiences that this kind of understanding requires the 'transcendental function' to create the information Mr. Brown discerned in the book. "Anal retentive" became a popular phrase at work when profits began to be the primary focus of where I worked, rather than building a product. I wondered how many people knew something of it's origin.
C. G. Jung wrote that the first half of life is preparation for the second half, and that's a statement that implies he recognized 'foresight' in his own life. His Red Book which was only recently made available to the public exposes the many levels of his own mind that he became aware of, levels that linked to the depths within the depths of not only his own mind but the collective past. He wrote the Red Book from his encounter with the voice of the spirit of his age, and the spirit of past ages and what may be the spirit of future ages.
Perhaps the mind itself has always had an eye that never sleeps, that seems likely to me. It can take a snap shot of what's happening to me and it includes what ever is in my mind, it's complete in every detail. I know that now for a fact myself but I had to discover that fact from implications of such events as happened really that made no impression until they were retrieved. The mechanisms in the mind have been somewhat named in psychiatric texts.
Those mechanisms are within the mind and from my own experiences they are part of our body now, although that might not have always been the situation. The 'transcendental function' has developed and become distinct through a span of ages, periods in Time, perhaps as our 'genetic structures', forms that create 'events' from ordinary daily situations and circumstances that the individual would normally experience without any particular way to distinguish some 'difference'.
To clarify what I mean by an 'event' rather than an event, this example happened in 1987: I was assigned to a new location in the building where I worked at Boeing and I had to walk onto a metal gridwork floor for the first time. It's a large area, tanks are embedded in it so that only 4 feet are above the gridwork floor and 12 feet are below it. Without hesitation I walked onto the floor to do my job which required I look for paperwork that was on the ledge of each tank. I'd taken several steps when suddenly I felt dizzy and had to cling to the ledge of the tank nearest me.
A few seconds passed then I realized the light in the room below the grid work floor made it nearly disappear, so I felt like I used to feel when I walked across a bridge near my grandmothers' house when we went for a walk when I was very young. The road disappeared to my childish perception, I saw the water and not the grid work so I wouldn't walk on the bridge for some time. When she carried me successfully across a few times, I managed to accept that all floors aren't solid. The memories of my past somehow produced a thought: "It's just like standing on an invisible floor. I can see what's going on around me but I can see whats going on below me too."
Then I noticed distinctly an 'effect' to the thought, that turned the direction of the words around, I had thought them, but the effect turned them around toward me, I heard them again in a bundled unit, no space between the words as though another person had said them to me. This 'effect' had come to my attention over a span of months, almost two years; it had seemed to be happening but I could not be certain until this event in my material world happened and it was distinct this time.
The words of my thought were 'reflected back' to me, they were in a very real way re-used to 'talk' to me because in the 're-use' the words told me what I was doing not only physically but mentally. I had not yet understood that a process of individuation existed, I knew nothing about a mental realm or the mind/brain/body connection to it. I was amazed (but not immediately) at how my material world thought, produced by what I was doing physically was repeated, somewhat like an echo but there were no spaces between the words. I would not have used the word echo then, that word had to occur in several other situations before it seemed to fit. There was another phrase that did occur to me somewhat distantly: double thought and I remembered having read it in a book by Wilson Van Dusen and it was a quotation from Emanuel Swedenborg's writings.
It was the first quotation I read anywhere from Emanuel Swedenborg's writings. "I feared my double thought might be torn asunder." It was a strange phrase, I remember pausing briefly over it, wondering what it could mean. I would never have suspected that at the time I read the phrase, it literally described what I had been occasionally experiencing, a doubleness not only of thought, but everything outside of my body. This change had happened in a certain specific setting at first, a few years before 1984, then it expanded to every aspect of my life, but gradually. When it happened I felt the same dizziness that I feel when I've driven into a parking slot and stopped when someone adjacent to me is pulling out. For a few seconds I feel like I'm moving myself, and I jam on the brakes.
This was such a new kind of 'event' when each event happened, that I felt that real dizziness, when my mind was detached from my normal world experiences. There were times when I wondered if I was 'thinking' my thoughts, my thought world was quite different after about 1982.
If that isn't clear enough I can refer my reader to another example of 'double thought' which I found a few years ago in Theodore Reik's book, Fragment of a Great Confession in chapter titled: In Small Packages. He described an event where his own mind seemed to hover over certain words in his thought, they developed a hidden meaning, a double bottom. He did not recognize that those particular words actually described to him a detail about his own real life, the fact that they 'hovered' in his mind forced him to 're-think' about them.
The term 'second sight' has a real meaning when the processes of individuation are activated.