Scientifically nothing in field of spirituality can be ever understood.
There are very specific reasons why scientists’ world over failed to understand gist of spirituality, prime of which being their demand for proofs that are never forthcoming in field of spirituality.
None had seen God nor would ever do, yet so many people world over believed in God and his system that includes world of souls atmans. Everything in domain of God is directly governed by faith (called shraddha in Hinduism).
We do not see a flower yet recognize its presence just by its fragrance. Similarly we recognize, feel presence of God in day-to-day affairs of life.
To understand spirituality that directly relates to spirit within, we need to have faith in God and his system. Only then we can understand nuances of spiritual path.
My father was a scientist, a highly acclaimed one, world expert on many matters, also an inventor. Yet, whenever I talked to him about God he said he did not believe in his existence yet ritually went to Jain temples on religious occasions every single time.
When I confronted him why he went to temples if he did not believe in god, he kept mum. Living in the society, the community he did not want to make people disbelieve in him. He did not want to spread the message that he was not a believer of god.
He also had a very bloated ego. I used to point-blank tell him that it was his bloated ego due to which he was not able to recognize presence of god. Again he kept mum. But do not know why from the beginning of life he absolutely believed in me and my thinking.
Perhaps it was the spanking my father received from grandfather at my behest when I was six years of age that he believed in me. I had caught my father red-handed speaking untruth when six years of age. I reported him to my grandfather who happened to pass by.
There was a serious argument between my grandfather and father. I heard my grandfather telling my father always to believe in me as I walked path of truthfulness.
Wow, this incident made me realize power of truth and also succinctly helped me expedite my spiritual journey.
There were many other scientists working with my father. Because of the presence of their ego none wanted to believe in god. Almost all ritually went to temples but to believe in god was a different matter to them.
Scientific analysis demands proofs at each and every stage and in the field of spirituality they are never forthcoming and for this very reason science does not believe in spirituality or we can say following science one never reaches spirituality.
From my experience I can confidently say spirituality starts from the point where science ends. My journey into spirituality was based on pure logic, power of contemplation (chintan) all the time. My faith in God Almighty from six years of age was 100%, maybe from the results of previous life.
Indulging in spirituality however 37 years of age I finally reached god, realized self. Permanently liberated from cycle of birth and death, I shall have no further manifestation. Having become a pure soul atman moment I leave my mortal frame, I shall attain moksha salvation.
Trying to understand spirituality scientifically is an absolute farce, should not be attempted.