The Guardian – Johann Hari: “Social media and many other facets of modern life are destroying our ability to concentrate. We need to reclaim our minds while we still can… I travelled all over the world in the next three years, from Miami to Moscow to Melbourne, interviewing the leading experts in the world about focus. What I learned persuaded me that we are not now facing simply a normal anxiety about attention, of the kind every generation goes through as it ages. We are living in a serious attention crisis – one with huge implications for how we live. I learned there are twelve factors that have been proven to reduce people’s ability to pay attention and that many of these factors have been rising in the past few decades – sometimes dramatically…

…Prof Earl Miller, a neuroscientist at Massachusetts Institute of Technology, explained one to me. He said “your brain can only produce one or two thoughts” in your conscious mind at once. That’s it. “We’re very, very single-minded.” We have “very limited cognitive capacity”. But we have fallen for an enormous delusion. The average teenager now believes they can follow six forms of media at the same time. When neuroscientists studied this, they found that when people believe they are doing several things at once, they are actually juggling. “They’re switching back and forth. They don’t notice the switching because their brain sort of papers it over to give a seamless experience of consciousness, but what they’re actually doing is switching and reconfiguring their brain moment-to-moment, task-to-task – [and] that comes with a cost.”