Ray_Bradbury and Ray_Harryhausen were both born in 1920 and lived into their early 90s. They got to see how CGI and VR were gradually progressing.
Back in the day, while Ray_Harryhausen was creating special effects for movies, Ray_Bradbury was thinking up various ideas and concepts to write about. At some point out of the many stories, Ray_Bradbury started to visualize what the future of motion pictures would be like. Something far beyond 3D color and sound.
The electronic computer was in its infancy at the start of the 1950s. RB was able to envision a time when a powerful home computer system could generate or project a programmed reality in a special 3D entertainment room. RB was essentially writing about something like the Holodeck in STTNG.
"The World the Children Made" in the September 23, 1950 issue of The Saturday Evening Post, it was republished under its current name in the 1951 anthology The Illustrated Man." https://en.wikipedia.org/wiki/The_Veldt_(short_story)
https://en.wikipedia.org/wiki/Virtual_reality#Children_in_virtual_reality
The Veldt remains as an enduring cautionary tale about some children that might use their holographic nursery suite or playroom as a deathtrap for their parents.
https://en.wikipedia.org/wiki/Virtual_reality_in_fiction#Different_forms_of_reality
