Wolitzer never quite settles on an overall tone, either. Once the teenagers drift into adulthood she follows four of them — Jules, Ash, Ethan and Jonah — into late middle age. Though she plainly wants her story to have a sweeping, 19th-century scope, Wolitzer has a 20th-century sensibility, a reverence for subjectivity, and a tendency to view psychology as fate. But as if these emphases were not grand enough for her purpose, she repeatedly hauls the focus away from the specific and personal which she captures so well.