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.
Number of adults aged 18 and over with at least one basic actions difficulty or complex activity limitation: 74.8 million (2014) Percent of adults aged 18 and over with at least one basic actions difficulty or complex activity limitation: 32.4% (2014) Number of adults aged 65 and older with at least one basic actions difficulty or complex activity limitation: 26.1 million (2014) Percent of adults aged 65 and older with at least one basic actions difficulty or complex activity limitation: 60.5% (2014)