I Am Pure Consciousness and How Do I Know That?

Thad Brahmam is one it is the one vast all of these consciousnesses are one consciousness many minds not only the objects in the world. and again the waking state you are that one consciousness it's great that sounds wonderful but in seriously in our mind there will be the suggestion I am that consciousness but look there are so many people here so that means they also must be like a consciousness like that.