You're sidestepping the argument. Complex systems have "fixed point" behavior. This is true for the climate, animal nesting and breeding habits, ... everything

You're sidestepping the argument. Complex systems have "fixed point" behavior. This is true for the climate, animal nesting and breeding habits, ... everything that isn't based on chance. I'm going out on a limb here and say that includes humans. That means there are a number of fixed solutions, and that complex beings or systems keep going back to those solutions. You can give them a little push and their behavior will change for a very short while (by the way: chaotically, in other words, impossible to control. In other words, making an ad for pepsi makes people try cola alternatives, it doesn't even make them go for pepsi), returning to either the previous solutions (the fixed point) or, if the new product is actually better, to a new solution (which is also a fixed point in that case). If you want behavior to change for a reasonable period you need to either take away the previous product or you need to make an actual better product. Plus you do read about that promoting an inferior product with ads just does not work. It has an effect for a while, and then stops. Agencies will of course happily try this, but it does not work. This is exactly how fixed points behave and not at all how a normal distribution behaves.