The observer (FW) and the observed (three states) are one in essence

If one becomes fully aware of the fact that, the self is not form but self is formless then, all the three states will naturally become unreal. If one makes no discriminations, the thousand things are as they are, of single stuff. To understand the mystery of this single stuff is to be released from all entanglements. When all things are seen equally the timeless Self-stuff is reached. No comparisons or analogies are possible in this causeless, relation less state, which is mirage- less existence.

The observer (FW) and the observed (three states) are one in essence. Until we are able to view and judge the on the standpoint of the observer we will not become aware the observer (FW) and observed [three states] are one in essence. The essence is consciousness. Thus the consciousness is ultimate truth or Brahman. 

If the Advita is bifurcated from all the religious add-on it becomes more scientific then it becomes very easy to understand and assimilate. All these scientific –inventions are nearer to the truth but they are not truth in themselves.

Buddha, Sri,Sankara and Sri, Goudpada have declared non-dual truth centuries back but one has to reach the destination with scientific[rational] investigation not through punditry. Until one mentally reaches the conclusion, the conviction will not arise. Without the firm conviction the wisdom will not dawn. Therefore, there is a need to know consciousness is real all else is a myth, which Sri, Sankara declared as the world is myth Brahman alone is real.

Sri, Sankara says Atman is Brahman and everything is Brahman is scientific declaration not religious or yogic. Sri, Sankara and Goudpada are more scientific than anyone else in the world. Since, the real Advitic essence is hidden it cannot be got without the inner [mental] journey.

Goudpada says that:- The merciful Veda teaches karma and Upasana to people of lower and middling intellect, while Jnana is taught to those of higher intellect.

Gnana here is knowledge un-contradictable truth or scientific truth. Thus their scientific truth of the whole not the part is declared by Sri, Sankara 1400 years back and thought only to those of higher intellect. Thus karma and upasana[religion and yoga] ,which is meant for the mass has to be bifurcated from Advaita to reach the ultimate end. 

Wisdom is for those are capable of inquiring into their own existence to know and realize the ultimate truth, which is Brahman. –FORMLESS PATH