Strange Concepts that Cannot be Understood: I e. Mind
Concept is, metaphorically, an unopened sticker pack and a new sticker book - precisely their meaning in that state - I e. You collect stickers and stick them in the book (that's the concept of Football Sticker Book and Packs). Upon sticking a sticker in the book, it is no longer a concept. You may also refer to Concept Art, which is a type of pre-art to any media used as a foundry on which the actual product is built upon.
Understanding is the process by which we get, not have, a subject.
We may get something and then lose it or get it and then have it; understanding, to the point of acknowledgement.
Mind is something that begets our understanding for, either our circumstance or it's nature is strange to us.
Perhaps the problem is our dimensions; we may need a stillness near impossible to obtain in this life.
The nature of mind can be registered, but the absolution of such a nature is a matter we, unless by a miracle, or great feat of thought, cannot perfect.
Again - it's nature is strange to us(by it's nature, I mean mind directly, not indirectly by way of it's user's experience of it.)