Excerpt
"At the level of scientific research I'm not sure how much further scope there is for physical probing of the brain... Yes we can compare healthy and diseased brains, and we can map brains and arrive at fairly definite conclusions about the functions of different brain areas, and we can even digitally reconstruct neurons, but I suspect the real breakthroughs in our understanding of consciousness are going to come from an entirely different direction. That direction, controversially, has to do with psychedelics--which, as many of the contributors to The Divine Spark argue, offer spectacular potential for the investigation of the "hard problem" of consciousness." --Graham Hancock, from the introduction