An engineer named Christopher Scholes designed the QWERTY layout in 1873 specifically to slow typists down; the typewriting machines of the day tended to jam if the typist went too fast. But then the Remington Sewing Machine Company mass-produced a typewriter using the QWERTY keyboard, which meant that lots of typists began to learn the system, which meant that other typewriter companies began to offer the QWERTY keyboard, which meant that still more typists began to learn it, et cetera, et cetera. -- M. Mitchell Waldrop: Complexity, Simon & Schuster, New York (1992).
The QWERTY keyboard was invented by Mr. Christopher Latham Sholes, not Scholes (cf. U. S. Patent No.207559). In 1873 Mr. Sholes was in the position of editor-in-chief of The Daily Milwaukee News, not an engineer (cf. "Personal Mention", Milwaukee Daily Sentinel, Vol.30, No.293 (December 11, 1873), p.8, l.3). "To slow typists down" is nothing but a hoax by Mr. Robert Parkinson, as I mentioned before. It was E. Remington & Sons, not Remington Sewing Machine Company, that manufactured Sholes & Glidden Type Writer in September, 1873 (cf. John A. Zellers: The Typewriter - A Short History on Its 75th Anniversary 1873-1948, Newcomen Society of England American Branch, New York (1948)). The other typewriter companies, including Caligraph and Hammond, offered their own keyboard arrangements, not QWERTY, in the 1880's. Mr. Waldrop should study more on the history of typewriter before he argue with "increasing returns".