The problem with communication is the illusion that it has occurred.

George Bernard Shaw (1856-1950) Irish playwright and critic

(Spurious)

Frequently attributed, but not found in Shaw's writings. It was most likely originated by William Hollingsworth Whyte, "Is Anybody Listening?" Fortune (1950-09).

Variant: "The problem with communication is the illusion that it has taken place."

More discussion: The Biggest Problem in Communication Is the Illusion That It Has Taken Place – Quote Investigator.