The seekers goal is to acquire non dual wisdom, whereas the yogis goal is to attain Samadhi.

The goal of the seeker after truth is not the same of the yogi. The seekers goal is to acquire non dual wisdom, whereas the yogis goal is to attain Samadhi. This non dual wisdom is to know all the three states are erupted out of the soul, which is in the form of Consciousness sustained by Consciousness finally they, dissolve as Consciousness.

All the three states are an object to the Consciousness, which is the witness of the three states.  When one has no idea of being separated from the three states, then there is no idea of space, time and form. 

By Gazing at nose-tip one cannot acquire non dual wisdom because a man is false entity within the false experience. When the self is not the form but the self is formless then what is the use of doing practice on the base of the form, which is the false entity. Pursuit of truth is to know what truth is and what is false and realize and establish in the truth.  If one wants wisdom then he must look on everything as consciousness.  He must have firm conviction that, —everything is Consciousness. 

All the three states disappear back to the soul.  All the three states are mere mirage created out of consciousness. All the names and forms are part of the mirage. The mirage appears as waking or dream (duality) and disappears as deep sleep (non-duality) thus the universe, appears as Mind. And mind appears as waking or dream. Thus mind is also Consciousness because it is created out of consciousness. If one knows whole world is dream, or is mental, when all the states go, it becomes Consciousness (soul). Hence he who becomes a sage is able to know his- self as Consciousness. This is the meaning of non-causality. Mind seemed to be the cause of duality, but its elimination shows clearly that they are non-different from it.

The three divisions of time--past present and future--are within the waking or dream.

Just as a stone, a tree, a straw, grain, a mat, a cloth, a pot, and so on, when burned, are reduced to earth (from which they came), so the body and its sense organs, on being burned in the fire of Knowledge, become Knowledge and are absorbed in Brahman, like darkness in the light of the sun.- Sri- Sankara

_All the three states are made of the same substance, whether it is dreams, deep sleep or waking. All the object and sense perception is of the same substance. This is the great lesson to be learnt by the seekers of truth.

The three divisions of time--past present and future--are within the waking or dream.  It becomes necessary to analyze the three states. Whatever may come in the future, whatever objects existed in the past, whatever thing one can think of in the present--all these are possible only in waking experience. Waking or dream consists of names and forms.” All names are but words.

 The waking is parallel dream and dream is parallel waking.  The formless knower of the three states, which comes and goes, is within the three states but it is apart from the three states. It is within the three states as their formless substance and it is apart from the three states as their formless witness.  Thus judging and reasoning the truth on the waking entity is erroneous because the self is neither the waking entity nor the dream entity. Thus the self is not the form but formless consciousness, which pervades all the three states.  

All the three states are got from the Consciousness(soul), corresponding to formlessness. One has to mentally merge waking into dreams, then merge dream into deep sleep. And finally he has to merge into Consciousness.

Any experience, is part of the mirage, and hence a superimposition. Consciousness is the substratum of the experience of all the three states.