Several weeks ago, Chipotle founder Steve Ells published a column headlined "Conventional vs. Grass-fed Beef." As you've probably heard, Chipotle prefers the latter—the fast-casual burrito chain has a lot to say about agricultural reform, ethical food, etc. But here the subject is more complicated than the title suggests: Ells was defending Chipotle's decision to stop buying exclusively domestic beef in favor of importing some of it from Australia, where the grass-fed supply is better. It's a classic food-ethics connundrum: should you go with the higher production standard, or the food produced closer to home? Chipotle chose the former, a perfectly defensible choice if you just have the two.