The tricky part is understanding consumer behavior. McDonald's has been rolling out touchscreens in San Francisco where they are still operating, but they also tried this in Colorado and in under a month they removed most because they were losing customers. Operational efficiencies are always wonderful on the backend, but when you put them in front of your customers it's important to understand their reactions as they may have negative reactions. There are lots of people who are not happy about robots taking jobs, and if they can see these robots it will influence their loyalty to that store.