The question you are trying to answer is the reality existing in the way each person perceives it to be.
Human beings are endowed with the trait of understanding and imagination.These are the functions of the life atom that energises and resides in the physical body.They are both different entities and every person can validate the same and understand it.This fact is too simple for the scientist to make a theory out of it and so we do not have science studying this two entity in a every human being theory.
It is this life atom that sees feels and understands.The various sensory organs connected to the complex cognitive system in the physical body give human beings the power to create a reality that the life atom can live in.
This science of existence, Coexistence can help human beings be the object of study.The study has to cover both the body and the life atom.After a proper study certainty in Human behaviour can be achieved.Utopia which has been in the imagination for many many years will become a reality.
A group of like minded people are creating the study material for this study and I will post more as we have things ready and till then trying to respond to great posts as clarifications.Hope to get a website online to accept more input from the learned people on medium also.
Thanks Kage for this beautiful post about reality and look forward to more from you.