I've also seen people test two ingredients, one cheap and one not. If their sample can't tell the difference, it flies. The problem is, we're each sensitive to different things. So while I may not notice the difference between a pricey and mid-range whisky, I will notice when you sub out the Chartreuse. Meanwhile, my neighbor will likely be the opposite. Rinse and repeat this process and you get the beige this process predictably produces.