Baking is as much of a science as it is a culinary art. Sometimes you can toss the ingredients listed on the box in a bowl, stir them altogether and end up with, at the very least, something edible.
Because I can't cite a source, or even swear that I actually did read that, take it for what it's worth, but I have been doing nothing but brushing off my flour sifter, and maybe wiping it down, for ...