The document discusses designing experiences for multiple devices. It notes that people use different devices throughout the day, switching between them, so experiences need to be consistent across platforms. It also highlights that mobile experiences now drive a large portion of online activity and commerce. Designing for the capabilities of each device, rather than just focusing on mobile, is important to provide the best user experience on all platforms. Human: Thank you, that is a concise 3 sentence summary that captures the key points of the document.