QED

am I imagining things?

source

“Q.E.D.” (sometimes written “QED”) is an abbreviation for the Latin phrase “quod erat demonstrandum” (“that which was to be demonstrated”), a notation which is often placed at the end of a mathematical proof to indicate its completion. ~ Wolfram

In a New Yorker review of a book by an anthropologist about belief and prayer in evangelical circles, I came across the notation, “QED,” which I had to look up…