Rather triumphally, the blurb for Roger Lewin's new book describes the author as "arguably the best professional science journalist in the English-speaking world". Times may have moved on since this book's publication in 1993, but it is difficult to credit that claim on the strength of its contents. In Complexity: Life at the Edge of Chaos Roger Lewin fails to do many of the basic things that science reporting really ought to do. Like clearly expounding the theory in the first place.
Lewin starts with a long chapter on the remains of a civilisation at Chaco Canyon, New Mexico. It is designed, I suppose, to exemplify the kernel of complexity theory. In an effort to be entertaining Lewin resorts to New Journalist techniques, recounting the hike into the canyon and even pausing to recount an episode of hayfever. This opening passage thus feels decidedly padded, and after ten pages (of a 200 page book) yields as its first dividend: "the phenomenon that may link these disparate worlds [being chemistry, physics, biology, economics and so on], including what propelled Chaco Canyon along its unique history, is called complexity".
Come again?
Lewin thereafter sketches what he means by complexity airily: that "dynamical" systems (can scientists resist elaborating for the sake of it - isn't the word "dynamic"?) will tend to behave, at an abstract level, in predictable ways: that the universe of evolutionary design space is constrained - heavily constrained, even - by architecture of a given ecosystem. At least, that's what I deduce him to be saying because whatever shape the book started out with is quickly lost as Lewin gallops around the leading academics in the evolutionary design space: Richard Dawkins, E. O. Wilson, Daniel Dennett, Stephen Jay Gould, Roger Penrose are among a host of names whose views are canvassed. Given the differences of opinion amongst them - in some cases, animosities run deep - it should be little surprise that the there of complexity Lewin sets out to describe remains elusive.
In the nearly 20 years since its publication there has been much literature about Evolution, but less talk of complexity, and while there are some interesting asides and snippets in this brief book, most of the interesting material in it - game theory, Conway's Game of Life, emergence, evolution and so on, have been covered more comprehensively and more recently by the academics Lewin mentions in this book.
Olly Buxton