" I propose that what we call “consciousness” is a feeling forming a backdrop to, or attached to, a current mental event or instinct. It is best grasped by considering a common engineering architecture called layering, which allows complex systems to function efficiently and in an integrated fashion, from atoms to molecules, to cells, to circuits, to cognitive and perceptual capacities. If the brain indeed consists of different layers (in the engineering sense), then information from a micro level may be integrated at higher and higher layers until each modular unit itself produces consciousness. A layer architecture allows for new levels of functioning to arise from lower-level functioning parts that could not create the “higher level” experience alone. It is time to learn more about layering and the wonders it brings to understanding brain architecture. We are on the road to realizing that consciousness is not a “thing.” It is the result of a process embedded in an architecture, just as a democracy is not a thing but the result of a process. "
― Michael S. Gazzaniga , The Consciousness Instinct: Unraveling the Mystery of How the Brain Makes the Mind