pseudo-YASID: Spang on, but no cigar

In a story I wrote on a typewriter, I predicted that everyone in my
far-future setting would carry a pocket terminal.

I also said that a terminal that included a sound system would be
twice as bulky as everyone else's.  (The length of sound waves
controls  the sizes of microphones and speakers, so they can't be
tiny.)


Are there published stories in which predictions are laughably
correct?


--
Joy Beeson
joy beeson at centurylink dot net
http://wlweather.net/PAGEJOY/