Here is a very interesting and, to my mind, useful letter to the editor of Sports Illustrated, written by Brandon Gaut of Irvine, Calif., whose home page is here:
As a scientist and a sports fan, I believe the current doping scandals compromise science as much as sports. The tests are performed by entities motivated by and funded to achieve the goal of detecting cheaters; their objectivity is suspect. Also, it is a scientific fact that there will be positive tests even when there are no cheaters. From my perspective, the puzzle is not the occasional prositive test, but why there aren’t a great many more. The system is broken, and I fear it is not always due to cheating athletes.”
This is yet another example of why I believe that letters to the editor are one of the most worthwhile parts of any publication.