In addition, the writer examines general theories and some of the ancient questions that science today is still tackling, such as chance and certainty, free will and determinism, science and voodoo, etc. He also discusses some of the major scientific developments of the age, such as Thomas Kuhn's views on historical paradigms and the meaning of dreams.
除此之外，作者以全方位思考，既論及一些今天科學仍然必需面對的古老議題，如偶然與必然、自由意志與命定論、科學與巫術等；又論及當代一些科學發展的前況，如孔恩（T.Kuhn）的歷史典範觀、夢的意義等。