simplicity

Keep the focus on minimal product. More on this later, but your job as product manager is not to define the ultimate product, it’s to define the smallest possible product that will meet your goals

Let's put it this way: if you are a novelist, I think you start out with a 20 word idea, and you work at it and you wind up with a 200,000 word novel. We, picture-book people, or at least I, start out with 200,000 words and I reduce it to 20

Eric Carle