Scientists: Consciousness in Quantum State After Death, page-31

''Engineering knowledge " 'Medical knowledge"
"quantum knowledge" and " Spiritual knowledge " surely arise from subjective experiences as a result of enquires.''

No. Engineering, for example, is an objective field entailing principles and practices that anyone can access and examine...not so spiritual/religious experiences reported by individuals.

Do you accept the report of a Hindu or Muslim when they tell you that they have had spiritual experiences related to Brahma or Allah?

That is, that their experience is in fact related to an actual entity such as Brahma or Allah?

Inquiry alone proves nothing without the ability to test and confirm by others who are unrelated to the experiences/beliefs that being reported.