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
Micromorts A Definition by Matt Webb interconnected.org There’s a standard way to understand the relative danger of any activity. A micromort is "a unit of risk defined as one-in-a-million chance of death." For example: skydiving is 8 micromorts per jump running a marathon: 26 micromorts 1 micromort: walking 17 miles, or driving 230 miles Generally being alive averages out at 24 micromorts/day. deathchance