Shinzen Young tries to deexoticize enlightenment by taking a multidisciplinary approach to understanding human experience, drawing on a variety of religious disciplines as well as modern science. There's some good stuff in there, but also a lot of repetitiveness. It only occasionally describes in an actionably precise way things that I thought I could use to better tune my meditation. And the "science" part mostly means borrowing language from scientific disciplines to make somewhat forced analogies with Buddhist concepts or to describe metaphorically the sorts of experiences encountered during meditation.