Understanding Consciousness Goes Beyond Exploring Brain Chemistry
We can account for the evolution of consciousness only if we crack the philosophy, as well as the physics, of the brain. The science of consciousness has not lived up to expectations. Over the summer, the neuroscientist Christof Koch conceded defeat on his 25-year bet with the philosopher David Chalmers, a lost wager that the science of consciousness would be all wrapped up by now. In September, over 100 consciousness researchers signed a public letter condemning one of the most popular theories of consciousness—the integrated information theory—as pseudoscience. This in turn prompted strong responses from other researchers in the field. Despite decades of research, there’s little sign of consensus on consciousness, with several rival theories still in contention. Your consciousness is what it’s like to be you. It’s your experiences of color and sound and smell; your feelings of pain, joy, excitement or tiredness. It’s w...