Rules
[off topic?]
Stand On Zanzibar won the 1969 Hugo award for best science fiction novel. It was set in the early 21st century.
Some of the predictions were thrill killing mass shooters, artificial intelligence, music videos, personalized advertising, legal marijuana, and widespread homelessness in rich countries.
I can not remember the story, but it was from the 1920s or 1930s and I was astonished at just how close to reality it predicted a lot of stuff. Like cell phones and personal computers, as well as getting very close to how they have affected society.
Keep wanting to say it was by Ray Bradbury, but it was at least 10 years prior to his first published work. Might have been Lovecraft, actually... That's the only author I definitely remember reading a lot of from around that time period. ๐ค
Murray Leinster's A Logic Named Joe, maybe? That was a little later than you said, 40s
47 years.
How long is a piece of string? Answers at 11.