It has been said over and over again(?), that the role consciousness can play, is in sorting out states the individual finds itself amidst. States being either world, or inner self, or states out of the interaction with other individuals. All that we have amassed as we delve deep, with our minds chaotic processes, into them states.
Checking out the things around us, reminding us what each thing is. That a tree is a tree, or a cat is cat. A reassurance of the content of concepts, the stuff they are made up of. Along with, that we put keys in such and such place and that when we need them, we will find them in such and such place. To preserve the continuity in our daily lives. Contiguity? Congruency?
Consciousness reassures us that the world is, as is. Checking up on the contents of the concepts we have learned at some point in time, along with all the properties and attributes each concept is associated with.