"Heads I win, Tails You Lose"

This is an excellent article by Richard Wiseman on psi research and how studies are poorly designed, statistics are misused, and results are distorted to support psi research. Many of these problems are also common to many types of CAM research and unfortunately, sometimes other medical researh as well, so this is a useful article to keep in mind when evaluating medical claims. Basically, it illustrates many things which pseudoscience and sometimes just bad science does which should be kept in mind when critically evaluating claims.