When I got my issue of the Sci. Am. my blood boiled. The mag. turned into an ultra-liberal, politically-correct junk pile a few years ago. Recently a new editor arrived and the articles made a noticeable improvement. Until the current article about evolution of the vertibrate eye. Some old stupid comments about the inverted retina, and the blind spot, and how the octopus eye has a so much better design. Pure garbage. Here is an answer, pure science, with reasonable comments:-http://www.evolutionnews.org/2011/06/scientific_american_makes_bold047651.html