If you guessed "physics," or "if your cheese melted into a perfect square, that would be a sign you probably shouldn't eat it," you're correct.

Anyway, McDonald's gave us a look-see into one of their photo shoots, and the chain of production from the food stylist to the photographer to the Photoshop jockey. Why it's gone viral I have no idea, but as someone who uses Photoshop every day—but usually very quickly in a panic to move on to the next thing—watching the kind of details an actual professional looks for was oddly enthralling.

Yes, I would have changed the color balance and stamp-tooled the nicks in the bread. But just ever-so-slightly tightening the curve of the melted cheese corner? That's what separates amateurs like me from actual photo editors.