Have you ever walked past a supermarket checkout and noticed the magazines? On so many of the covers, the predominant theme is diet. Diet, diet, diet. Fascinatingly, if you look at the weekly publications, they often have something advertised such as "THE Fat Burning Diet Never count calories again " All well and good, except that the very next week, the exact same magazine will be advertising "THE BEST DIET EVER The Not-Diet-Diet Scientifically...