Website Response Times An Article by Jakob Nielsen www.nngroup.com Users really care about speed in interaction design...A snappy user experience beats a glamorous one, for the simple reason that people engage more with a site when they can move freely and focus on the content instead of on their endless wait. 0.1 seconds gives the feeling of instantaneous response. This level of responsiveness is essential to support the feeling of direct manipulation. 1 second keeps the user's flow of thought seamless. 10 seconds keeps the user's attention. A 10-second delay will often make users leave a site immediately. uxperformanceinteraction
This language without words There must be a language that doesn't depend on words, the boy thought. I've already had that experience with my sheep, and now it's happening with people. He was learning a lot of new things. Some of them were things that he had already experienced, and weren't really new, but that he had never perceived before. And he hadn't perceived them because he had become accustomed to them. He realized: If I can learn to understand the language without words, I can learn to understand the world. Paulo Coelho, The Alchemist The quality without a name language