Of course we know what consciousness is and how it arises. Here are a couple quotes from K on consciousness. I can provide you with a couple of dozen more if you want:
The content of consciousness is consciousness. Your consciousness, or another’s consciousness, is its content. If it is born in India, then all the traditions, superstitions, hopes, fears, sorrows, anxieties, violence, sexual demands, aggression, the beliefs, dogmas and creeds of that country are the content of its consciousness. Yet the content of consciousness is extraordinarily similar, whether of one born in the East or in the West.
J. Krishnamurti Talks in Saanen 1974 1st Public Talk 14th July 1974
What is the past? It is one’s racial inheritance, one’s conditioning as Hindu, Buddhist, Christian, Catholic, American and so on. It is the education one has received the hurts the delights, as remembrances. That is the past. That is one’s consciousness. Can that consciousness, with all its content of belief, dogma, hope, fear, longing and illusion, come to an end? For example, can one end, this morning, completely, one’s dependence on another? Dependence is part of one’s consciousness. The moment that ends, something new begins, obviously. But one never ends anything completely and that non-ending is one’s hope. Can one see and end dependence and its consequences, psychologically, inwardly? See what it means to depend and the immediate action taking place of ending it.
Now is the content of one’s consciousness to be got rid of bit by bit? That is, get rid of anger, then get rid of jealousy, bit by bit. That would too long. Or, can the whole thing be done instantly, immediately? for taking the contents of one’s consciousness and ending them one by one, will take many years, all one’s life perhaps. Is it possible to see the whole and end it - which is fairly simple, if one does it? But one’s mind is so conditioned that we allow time as a factor in change.
J. Krishnamurti Questions and Answers 12th Question Ojai, California 2nd Question & Answer Meeting 8th May 1980 `Living’
Question: What does it mean to see the totality of something? Is it ever possible to perceive the totality of something which is moving?
Can one see the totality of our consciousness completely? Of course one can. One’s consciousness is made up of all its content; one’s jealousy, nationality, beliefs, experiences and so on; they are the content of this thing called consciousness and the core of that is `me’, the self. Right? To see this thing entirely means giving complete attention to it. But one rarely gives complete attention to anything. If one gives complete attention at the very core, the self, one sees the whole.
J. Krishnamurti Questions and Answers 1st Question Brockwood Park 1st Question & Answer Meeting 28th August 1979 `The Self’