In his novel Fahrenheit 451 and many of his short stories, Bradbury sees human over-reliance on technology as a potentially serious problem for society.
In both Fahrenheit 451 and his short story "There Will Come Soft Rains," for example, societies—or at least cities—are destroyed by nuclear blasts after their citizens become over-dependent on technology.
In "The Veldt," letting a highly technological house, particularly the nursery, take over a family's life leads two children to murder their parents through technology, while in "The Sound of Thunder," the ability to travel back to the age of the dinosaurs for frivolous safaris leads to changing history in a terrible way. In "The Pedestrian," society has become so technological that a man who takes walks is considered insane.
Over and over, Bradbury warns that human relationships and a relationship with the natural world are more important than reliance on technology. To his mind, a society that get too dazzled by technology and too dependent on it is a society that is doomed.