The idea that life follows a series of carefully calibrated progressions—childhood to young adulthood to middle age to old age; dating to marriage to children to empty nest; low-level job to mid-level job to senior-level job to retirement—seems preposterously outdated. Instead of passing through a series of preordained life stages interrupted by periodic crises on birthdays that end in zero, we experience life as a complex swirl of celebrations, setbacks, triumphs, and rebirths across the full span of our years.
