In the living room the voice-clock sang, Tick-tock, seven o' clock, time to get up, time to get up, seven o' clock! as if it were afraid that nobody would. (Personfication)
At eight-thirty the eggs were shrived and the toast was like stone. An aluminum wedge scraped them into the sink, where hot water whirled them down a metal throat which digested and flushed them away to the distant sea. I can infer that only the house remains because of the absence of residents
Until this day, how well the house had kept its peace...it had shut up its windows and drawn shades in an old-maidenly preoccupation with self-protection which bordered on a mechanical paranoia. (Personfication)
Four-thirty.The nursery walls glowed. Animals took shape: yellow giraffes, blue lions, pink antelopes, lilac panthers cavorting in crystal substance. (Imagery)
At ten o'clock the house began to die.The wind blew. A falling tree bough crashed through the kitchen window. Cleaning solvent, bottled,shattered over the stove. The room was ablaze in an instant!I can infer that the habitat outisde of the house caused the end of the house (burnt trees).
The theme of the story is giving to much power to technology or other sources of power (Nuclear weapons) can result in death and danger for humanity. (Warning)