It's almost impossible to go to the market without coming back with something in a box, bag, can or jar. The simplicity of eliminating steps in preparing our food is now commonplace. We cut corners because food manufacturers make it so unbelievably easy and cheap to do so. Certainly some processed foods are safer than others, and most of us recognize how truly lucky we are to have so many options at our fingertips. And that's just the point: When we change our food habits, we change the world.