This document discusses responsive web design and some of the challenges that have arisen from it. It notes that responsive design has led to large pages with significant CSS and JavaScript to solve problems of serving different images sizes and formats to various device types. It critiques current design practices, noting that design schools still teach print rather than responsive design and that designs should be tested across real browsers and devices rather than just resizing screens. The document advocates for mobile-first design, prioritizing user needs over marketers, ensuring speed, and developing and testing on multiple real devices and browsers.