He's referring to the fact that whenever you display an image on an LCD you're losing an incredible amount of data about the the lighting and color. Data that the CCD actually does collect.<p>The comment about RAW is saying that your eye, capturing through a mirror viewfinder, is aware of this level of detail. If you view it through the LCD you miss out. This is unimportant if you only use JPG, because that will be neutered similarly to the electronic viewfinder, but if you are shooting RAW then you're looking for something more subtle and need analog control.