In fact, smartphones and other digital devices bring so many interesting experiences to children and adolescents that they cause a serious problem: They reduce interest in all non-screen-based forms of experience. Smartphones are like the cuckoo bird, which lays its eggs in other birds’ nests. The cuckoo egg hatches before the others, and the cuckoo hatchling promptly pushes the other eggs out of the nest in order to commandeer all of the food brought by the unsuspecting mother.
