Difference without a Distinction

The exact origin is disputed. The phrase "distinction without a difference" — the more common inverted form — traces to at least the 1570s in English, rooted in scholastic Latin disputation where drawing formal distinctions between concepts was standard philosophical practice. By the early 19th century it appeared in works by James Fenimore Cooper (1831) and Mark Twain (1880). The reversed framing developed alongside it as a label for the same conceptual failure.