A recent experience with a hotel coffee machine illustrated one primary difference of philosophy related to software design. It’s a Keurig machine and my wife Sarah was figuring out how to use it to make coffee. She noticed that when she inserted a K-Cup (the little containers of coffee), then the lid for the water reservoir popped open, so that she could fill it with water. At first, that seemed helpful, but immediately, I wondered about being able to open that reservoir even without inser...
