He's been in their lives for over 10 years. But it goes on, and it will evolve.â. Indeed, Grey's has persevered after the departures of several regular cast members, including Isaiah Washington, Sandra Oh, Katherine Heigl, T.R. Knight, Kate Walsh, Eric Dane, Chyler Leigh, and Kim Raver.
1 Some state that the average human attention span is approximately 5 minutes; others state that most healthy teenagers and adults are unable to sustain attention on one thing for more than about 20 minutes at a time, although they can choose repeatedly to re-focus on the same thing.
U.S. adults now spend an average of two hours and 21 minutes per day using their mobile devices for activities other than phone calls, up 46 minutes from last year. Time spent on smartphones, tablets and feature phones now also exceeds time spent on PCs, which clocked in at two hours and 19 minutes. The figure for PC use may seem low to any office worker who spends most days in front a computer screen, but eMarketer is taking all U.S. adults into account, some 20% of which still don't use the internet, according to Clark Fredrickson, VP-communications at the research firm.