Organizations often develop simple rules for complex situations, such as Nordstrom's approach to customer service. Indeed, "some of the most consistently innovative organizations (e.g. Unilever, Shell) do not focus on innovation as such. Instead, they focus on clear outcomes, supported by the right organizational cultures, rewards, and methods that ensure innovation is pervasive" . Explain lengthily how the company Nordstrom innovates and give an example with an outside source as well.