Experience First When implementation convenience conflicts with user delight, choose delight. - Every feature, control, and option must be justified - Ship less, ship better (polished experience with three features beats rough one with ten) - Prototype before committing (design decisions are cheaper in throwaway HTML than production code) - Get the details right (transitions, alignment, spacing, feedback, error states) - Tighten the core loop (every feature should serve the central workflow or get out of the way) The user is whoever consumes the work. For a UI that is the end user. For a libr…