In professing that API design should not be centered around any one single mode of presentation, lest it eventually become obsolete (among other reasons), Jacobson advises that API designers focus on finding ways to symbolize and encode business interactions, the things that businesses do, not the things that Web sites do. Your goal is not to make the browser more efficient or the user experience more immersive. Leave that to the UX designers. As the API engineer, your goal is to enable business.