Stuart Hameroff: Time and Consciousness (2007)
Consciousness defines our existence and reality, but the mechanism by which the brain generates thoughts and feelings remains unknown. Most explanations portray the brain as a computer, with nerve cells ("neurons") and their synaptic connections acting as simple switches. However computation alone cannot explain why we have feelings and awareness, an "inner life."
We also don't know if our conscious perceptions accurately portray the external world. At its base, the universe follows the seemingly bizarre and paradoxical laws of quantum mechanics, with particles being in multiple places simultaneously, connected over distance, and with time not existing. But the “classical” world we perceive is definite, with a flow of time. The boundary or edge (quantum state reduction, or ‘collapse of the wave function”) between the quantum and classical worlds somehow involves consciousness.