I've given up trying to talk people out of stupid shit, for the most part. They almost always take offense or argue or quote some article they read in a magazine designed to sell products. I grow in living soil JADAM/KNF style. It gets me every time when someone puts up a 3-page list of soil amendments and special microbial products and 25 different sources for the same mineral, along with their Glenn Beck chalkboard-looking schedule for teas and boosts and special tweaks and foliars, to the point that they're spending $2000 and 8 hours/day just to grow $3000 worth of bud... but you can't talk someone out of a cult. They have to want to leave.