I believe it is a matter of opinion. Based on my theory of unified consciousness which  is based on networking and oscillations in our intra-personal space , all thoughts and sensory information is processed within us.

   In my opinion the idea of universal mind is very beneficial to us as humanity , but its existence can only be proven after we can prove how a human mind truly works. 

Universal mind is discussed in The Complete Works of Swami Vivekananda, V.1,p.506 - v.2,p.267, v.8,p.131. Swami Vivekananda's Guru Sri Ramakrishna communed and experienced the universal mind and the universal soul. His experiences are recorded in the book:

http://www.chennaimath.org/istore/product/sri-ramakrishna-the-great-master/

http://www.vedanta.org/wiv/links/centers.html

Vikram, I have great respect for Swami Vivekananda and Sri Ramakrishna. On this forum it would be best for you write what they have said about Universal Mind existence. Sending a link to buy their books is not worthwhile or  appreciated . 

Dear Ravindra:

Here is quote from SV v.1,p.506.

Matter cannot be said to cause force nor force the cause of matter. Both are so related that one may disappear in the other. There must be third factor, and that third something is the mind. You cannot produce the universe from matter, neither from force. Mind is something which is neither force nor matter, yet begetting force and matter all the time. In the long run, mind is begetting all force, and that is what is meant by the universal mind, the sum total of all minds. Every one is creating, and in the some total of all these creations you have the universe--unity in diversity. It is one and it is many at the same time.

Here is quote from SV v.2,p.267.

We have seen that it is the universal cosmic mind that splits itself into the Akasha (matter) and Prana (force), and beyond mind we have have found the soul in us. In the universe, behind the universal mind, there is a Soul that exists, and it is called God. In the individual, it is the soul of man. In this universe, in the cosmos, just as the universal mind becomes evolved into Akasha (matter) and Prana (force), even so, we may find that the Universal Soul Itself becomes evolved as mind.

Following article refers to Swami Vivekananda at Ref.no.32.

Founding quantum theory on the basis of consciousness

E. Manousakis, Found. Phys. 36(6), 795, (2006)

Regarding buying the books, different people think in different way. Some may appreciate the link and some may not.

Here is a link to one more article that can be of interest.

Article Unified field of consciousness

Vikram, I read the article you have written "unified field of consciousness " You have written the following points and i would comment upon these. 

In the earlier work [2, 3], we have proposed that the unmanifest is absolute, indivisible, in􏰀nite, motionless ocean of pure consciousness in which there are no vibrations. This indivisible consciousness is formless and has no boundaries and is the only thing that existed before the universe was created and therefore it is one without a second. (what evidence do you have about it ?  This ocean of consciousness was all knowing because prior to the creation of the universe, there was nothing else for it to know other than itself. Who is at the center of this all knowing ?This ocean of consciousness was also blissfull because the unmanifest consciousness and bliss are not two separate things. This ocean of consciousness is called unmanifest because it is not manifest to the 􏰀ve human senses of the observer.  You are describing something yet saying it is not observed ? Both contradicting statements .This does not mean that it does not exist. This unmanifest when viewed through the 􏰀ve human senses appear as the empty space. Hence the unmanifest can be described as the existence knowledge bliss absolute. (who is experiencing that knowledge ?)We call this absolute because in the absence of second there cannot be relativity. Therefore it is beyond space and time and the laws of relativity fail at the level of the unmanifest. In general, the unmanifest does not interact with any form of manifest energies, hence it does not gravitate or collide with protons like neutrinos. (you are jumping from law of gravity, protons and space and time .)Due to this aloofness, the hot big bang or supernova explosions does not bother the unmanifest, nor can it be detected by a tankfull of heavy water or Michelson-Morley interferometer [8]. (you are describing either your own or someone else's experience and correlating mind to big bang .)

 Firstly , your theories do not have any biological evidence .

Secondly you have not described who is experiencing consciousness ?

Thirdly you know that mind is only seen in living things . You cannot make statements that it is outside human or living beings body , just because you feel it. 

For scienctific community to accept any theory you need evidence and research. Simply quoting own experience or statements from well respected "seers " does not mean the statements will have "scientific credibility ". 

I am a long time practitioner of "pranayama " and have explored  the mechanism underlying our consciousness . The most important fact is that no energy such as light , sound , temperature or touch is directly experienced by brain. Every sensation is coded. Therefore all thoughts , emotions are self generated within the space of our bodies. Before we can describe "universal consciousness we should describe human consciousness "

Here is a link to three pertinent articles published in last several months.The summary is written with each.

http://journal.frontiersin.org/article/10.3389/fnhum.2015.00248/full

This article refers  to three layers of oscillations  that support consciousness. The first layer origin is based on evolution from billions of years ago. the second and third layers are more advanced but all are related within a "unified model of consciousness"

http://www.sciencedirect.com/science/article/pii/S2251729415000051

This article deals with how the brain processes the vision. It also describes as the thalamus and its oscillations with various parts of the cortex is the "I" that experiences sensations , decides what needs to be done and then takes an action. 

https://www.researchgate.net/publication/271331108_Mind-body_response_and_neurophysiological_changes_during_stress_and_meditation_central_role_of_homeostasis

This article  shows why meditation and mind body response works. How anxiety changes each cell of the body? How meditation can help us treat anxiety and stress at the level of cell and molecular biology.

Article Mind-body response and neurophysiological changes during str...

Ravinder:

Q1. what evidence do you have about it?

A1. If you can answer my question, then I will answer yours. Do you believe that Higgs Boson exists? If yes, then what evidence do you have about it?

Q2. Who is at the center of this all knowing ?

A2. Knowledge and ignorance are of the mind. The unmanifest is beyond both and without any center.

Q3.You are describing something yet saying it is not observed ? Both contradicting statements .

A3. I have clearly stated in the article that the unmanifst cannot be described but can only be hinted at by the process of negation. At the level of the non-dual consciousness, the distinction between the observer and the observed does not exist. So there is no contradiction.

Q4. who is experiencing that knowledge?

A4. It is the mind that experiences the knowledge. When it dissolves in the unmanifest, it goes beyond knowledge and ignorance.

Q5. you are jumping from law of gravity, protons and space and time.

A5. jumping means motion. The unmanifest is perfectly motionless. When it splits into force and matter, it moves. Then the process of creation begins.

Q6. you are describing either your own or someone else's experience and correlating mind to big bang .)

A6. There are known matter in physics that does not interact with most of the matter in the universe. For example neutrino. Similarly x-rays easily penetrate the flesh but cannot penetrate the bones (protons). Same thing is true for human thoughts they do not interact with matter. The Spirit is even more subtle then human thought. These do not interact with the matter of the universe. So the correlation between the mind and the big bang is logical.

Q7. Firstly , your theories do not have any biological evidence .

A7. Biology come very late in the time-line of the Big Bang. There are no materials in the biology which are not made from the 16 fundamental elementary particles discovered by physics.

Q8. Secondly you have not described who is experiencing consciousness ?

A8. I repeat here that it is the mind that becomes conscious or unconscious. The term oscean of consciousness is used in the sense of the all pervasive Spirit which is the fundamental substance of the universe also known as the Mahatattva. From Mahatattva evoleves the Mahat which is the universal mind.

Q9. Thirdly you know that mind is only seen in living things . You cannot make statements that it is outside human or living beings body , just because you feel it. 

A9. No one has ever seen the mind with physical eyes. So how can you say that mind is only seen in living things? Those who have proposed the concept of universal mind is based on their own personal experience and verification. And when the experiences of more than one individual agree, you get a theory.

Q10. For scienctific community to accept any theory you need evidence and research. Simply quoting own experience or statements from well respected "seers " does not mean the statements will have "scientific credibility ". 

A10. When a scientist cannot rise above the limitations of his five senses to perceive the higher truths of the nature, he puts forth the arguments such as the above. Those who have perceived the higher truths are not very eager to receive any kind of credibility from anybody. They communicate this knowledge only for the good of others. Whether it is accepted or rejected does not make any difference to them.

Vikram, You have ignored 3 links to my  recent publications on consciousness. You have a doctrine or a belief but no evidence for your statements. This philosophy does have a following but it would be rejected by medical science and community.

        100 years ago the science was not far along and people believed in sayings by philosophers . They might sound good but due to lack of objective scientific evidence would not get much following from west. They need to be proven by science. Based on science I have studied and evidence I have published the "self" is turning out to have "SELF" that is undiscovered. The model of unified consciousness I have theorized is doing just that.  

 In this age of science we need to speak the language that is respected and promoted.

My dear Ravinder:

Now a days it has become a fashion among many to become a self proclaimed representative of the entire scientific community as if the community members have not the sufficient intelligence to decide for themselves what is correct and and what is not. Your idea of science seems to be very narrow and restricted to math physics chemistry and medical sciences. Philosophy and metaphysics is not a science to

you. When I gave a link to my article, I was not hoping for your certification, but thanks for your comments anyway.