Though we have come a long way technologically since Ray Bradbury wrote "The Veldt" in 1950, our lives are still not quite as "advanced" as the innovations in the story. Bradbury imagined a future where houses did everything for the people living there. In "The Veldt," not only do lights turn themselves off and on (which is possible today), but dinner cooks itself, tables set themselves, automatic baths scrub the bathers, beds rock their occupants to sleep, and the children have access to a holographic nursery. There, the kids can dream up whatever scenario they want to play out and actually participate with the characters in the scene. They are "sucked up" through a flue to get upstairs instead of walking. They take a rocket or a helicopter whenever they have somewhere outside to go.
It may not be too far into the future that our lives will be similar to those of the Hadleys in "The Veldt." Maybe Ray Bradbury was trying to warn us!