12 April, 2024

The Accident of Scale

English has a remarkable talent for acquiring words from incompatible sources and then presenting them to the world as if they belong together.  The word “scale” is the most elegant demonstration of this tendency available in the language.

English contains three entirely separate words spelt identically, pronounced identically, following identical grammatical rules, and sharing absolutely no etymological relationship.  They are not false cognates in the conventional sense — false cognates are usually pairs of words from different languages that look alike.  These three are false cognates of each other within the same language.  This is a category of linguistic accidents so specific it barely has a name.  The technical term is homonyms — but that word does not adequately convey the absurdity of the situation.

Scale the First: Fish and Flakes

The first scale is the biological one — the thin, overlapping plates that protect the skin of fish and reptiles, the flaky deposits on heated metal, the white mineral crust inside your kettle.  To scale a fish is to remove these plates.  A scaled surface has had its coating removed.

This word entered Middle English as a shortening of the Old French “escale”, itself from a Germanic base.  It is, at its root, a word about protective layers, coverings, and the removal thereof.

Scale the Second: Weighing

The second scale is the instrument for weighing.  Originally, a simple balance, and now any device with an internal weighing mechanism.

This word has an entirely different origin: Middle English from Old Norse “skál”, meaning bowl, of Germanic origin, related to the Dutch “schaal” and German “Schale”, both meaning bowl.  The connection to weighing is obvious once you know it: the original balance consisted of two bowls suspended from a central point.  The bowls were the scales.  The bowls became the instrument.  The instrument became the word.

Scale the Third: Measurement and Climbing

The third scale is simultaneously the most complex and the most productive.  It is the graduated system of measurement, the ratio on a map, the musical series of ascending and descending notes, the mathematical notation system, the photographic exposure range — and also, as a verb, the act of climbing something high and steep.

This one comes from Latin “scala”, ladder; arriving through Old French “escaler” or medieval Latin “scalare”, both meaning “to climb”, from the Latin root “scandere” — to climb.  The connection between a ladder and a graduated measurement system is, once stated, obvious: both involve regular intervals ascending from a lower point to a higher one.

The musical scale ascends and descends.  The map scale represents proportional intervals.  The mathematical scale represents positional values in ascending powers.  All of these are ladders of a kind — regular steps from one level to the next.  This is also the scale you use when you “scale up” a business, “scale” a mountain, or produce a drawing “to scale.”  None of these uses has any connection to fish skin or weighing bowls.

The Grammatical Convergence

All three words — arriving from Old French Germanic, Old Norse Germanic, and Latin, across different centuries, with entirely different original meanings — converged in English and adopted precisely the same grammatical behaviour.  Each functions as a noun with the plural “scales.”  Each functions as a verb with the third person present “scales,” the past tense “scaled,” the past participle “scaled,” and the gerund “scaling.”  The grammatical forms are not merely similar.  They are identical.  Three unrelated words wearing the same grammatical clothing.

This is linguistic convergent evolution — the same phenomenon that produces wings independently in birds and bats, echolocation independently in dolphins and bats, and the camera eye independently in vertebrates and cephalopods.  Different origins, identical functional form.

English did not plan this.  English does not plan anything.  It absorbs vocabulary from whatever language its speakers encountered — Latin from the Church and scholarship, Old Norse from Viking settlement, Norman French from conquest, Germanic from its Anglo-Saxon foundations — and the resulting mass of adopted words sorts itself into grammatical patterns without any concern for whether the words sharing those patterns are related to each other.

The result is a language with an extraordinary vocabulary — the largest in the world by most estimates, with the Oxford English Dictionary containing approximately 600,000 words — and an equally extraordinary capacity to produce confusion, ambiguity, and the specific comedic situation of three entirely different concepts sharing a single word.

The Practical Consequence

The practical consequence is that English speakers navigate constant implicit disambiguation.  “He scaled the fish before scaling the wall, checking the scale to ensure the portions were correct.”  This sentence is grammatically impeccable and semantically coherent.  It uses all three “scales” in a single sentence without ambiguity, because context performs the disambiguation that etymological identity cannot.

Context is always doing this work in English.  It is one of the reasons English is simultaneously easy to begin learning and extraordinarily difficult to master.  The beginner acquires vocabulary quickly because English words are short, largely uninflected, and grammatically flexible.  The advanced learner discovers that the same word carries multiple entirely unrelated meanings and that only extensive cultural and contextual knowledge allows reliable disambiguation.

The three scales are not the only example.  “Bank” is a financial institution, a river edge, and the tilting of an aircraft.  “Fair” is equitable, a pale complexion, a travelling market, and tolerably good.  “Bear” is the animal, the act of carrying, and the act of tolerating.  English is full of these convergences — words that look and sound alike, follow the same grammatical rules, and share no etymological history whatsoever.

The linguist, Dr. Ferdinand Mongin de Saussure, of the University of Geneva, whose Cours de Linguistique Générale, published posthumously in 1916, founded modern structural linguistics, established that the relationship between a word’s sound and its meaning is arbitrary.  There is no natural connection between the sounds of “scale” and the concept of fish plates, or weighing instruments, or measurement systems.  The connections are purely conventional — the result of historical accident rather than any inherent fitness between sound and meaning.

The three English scales are his argument made manifest.  Three historical accidents, three separate etymological journeys, one identical destination.


Terence Nunis, DTM | Division Advisor, District 80 Division M | Club Advisor, AIA Toastmasters | Past President & Founder, Awesome Toastmasters