Gold Meritorious Patron
That is true ONLY as regards the CONTENT of a mind. The statement is not true as regard the FUNCTIONING of any mind (and/or a unit of awareness).
How any mind does what it does can be analyzed. These things can be studied. These things can be monitored and observed. Of course, the best place, and actually the ONLY place where you can observe such things in their own arena, is in YOUR OWN MIND.
For instance, one can analyze how a mind creates concepts, how these exist as ideas, and how these ideas relate to the experiences of the world and universe out there. General Semantics explored that a bit.
One can analyze how ideas exist at different levels of abstraction.
One can analyze how the subjective does what it does.
Most people get caught up in the details and content of ones own mind. Few actually ever aim to watch it in action - sort of like a spectator. Though, to do that requires some determination, some putting of a distance between "you and your mind", and also, the very act of watching a mind CHANGES IT!
By doing so, by "personally & scientifically observing a mind in action", the experience of subjectivity itself changes!
Scientology NEVER encouraged that, but Buddhism and other Hindu approaches do.
That ancient saying, "Know Thyself", referred to self-examination and self-awareness. It referred to calm, intelligent, and careful "introspection". Not as "ideas about", not as dogma, not as significance, but as "quielty paying attention to the workings of ones own mind, nature and inner space".
Observation directed inward. TR0 on your MIND! The watcher watching itself doing what it does. The observer observing itself doing what any observer does.
Again, Scientology NEVER encourages THAT!
That is a major failing of Scientology as a mental and spiritual practice.
I'm sure Mark would point out the word "definitively" in his comment (and the sentence after it which you omitted.)
While one may be able to do as you state. That does not necessarily mean that every person's mind functions in exactly the same fashion.
That being said, I agree, in the main, with you.