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.
Among all life lessons teachers have the responsibility to instill, self-control and commitment are the most important ones. According to a common belief, the average attention span of a typical university student is between 10 and 15 minutes. This period is even shorter with younger students, so their teachers have to rely on different âtricksâ that will bring the pupils back to reality.