Tumblehome

Tumblehome (pronounced tuhm-buhl-hohm)

(1) In naval architecture, an inward and upward slope of the middle body of a vessel; of the sides of a ship: To incline or slope inwards, to contract above the point of extreme breadth.

(2) A conceptually similar shape applied, in reverse, to the upper body of an automobile.

1828: A compound word, tumble + home.  Tumble was from the Middle English tumblen (to fall over and over again, tumble), frequentative of the Middle English tumben (to fall, leap, dance), from the Old English tumbian, from the Proto-Germanic tūmōną (to turn, rotate).  It was cognate with the Middle Dutch tumelen and the Middle Low German tumelen & tummelen.  Home was from the Middle English home, hom, hoom & ham, from the Old English hām (village, hamlet, manor, estate, home, dwelling, house, region, country), from the Proto-West Germanic haim, from the Proto-Germanic haimaz (home, village), from the Proto-Indo-European tḱóymos (village, home), from the root tḱey-.  The (rare and probably extinct) alternative spelling is tumble home.  Tumblehome is a noun; the noun plural is tumblehomes.

The meaning of the word tumblehome has been well understood from its first appearance in the early nineteenth century but the origin has never been obvious.  Shipbuilders had for centuries been using variations of the design for a number of reasons but the first known instance of the word dates only from 1828 and then without explanation, suggesting the term may already have been in common use, at least within the industry.  An 1848 reference from a shipwright does however hint at some sense of novelty, noting “… the upper works usually incline towards the middle line, or as it is termed “tumble home”.  The word “tumble” to refer to the sides of ships appears to have been used at least as early as 1687 but the compound tumblehome seems not to have emerged for another hundred and fifty-odd years.  The idea always summoned was of the imagery of the sides of a ship “tumbling down” the slope created but why “home” was added remains a mystery, the assumption being it was based either on (1) an association with certain domestic architectural styles of the time (2) the romantic notion of the sea, to which the tumblehome falls, being "home" for sailors or  (3) the idea of a dilapidated house in the throes of "tumbling down", fallen bits an pieces accumulating at the bottom.

Big ships and fast cars

In automotive design (upper), the term is applied when the width of the cabin (cockpit or glasshouse) reduces as the height rises.  Although curved glass in the side windows of cars began widely to be adopted in the mid-1960s, thus creating a mild tumblehome effect, the term is applied only when it is sufficiently severe to be apparent to casual viewers.

In naval architecture (lower), the geometry is reversed, a tumblehome define as a hull which flares out as the sides approach the waterline.  Although in some vessels, the effect is barely detectable by the naked eye, it’s a technical term and applies to all hulls which dimensionally qualify.  The opposite, the classic shape for ships’ hull, is called the flare.

USS Brooklyn, 1896.

Tumblehome, unless taken to extremes, was functional in that it improved stability in warships under sail; sailing ships heel (they tend to lean over when moving) and tumblehome reduced this.  At the time, the biggest contributor to a warship’s mass on the upper decks was the guns and a tumblehome design, moving the centre of gravity lower, allowed armament to be maintained or even increased without further loss of stability.  Additionally, there was the benefit of making it harder for boarding parties to climb aboard.  In commercial shipping, vessels were long taxed on the basis of the square footage of a ship’s deck and fat ships with a pronounced tumble carrying the same freight but taxed less, were attractive.  Government fiscal policy thus influenced and distorted design and engineering principles in the same way tax arrangements of windows affected architecture and those on cylinder bores (adversely) affected engine design.

Lamborghini LP500 Countach prototype, 1971.

The Countach had one of the most extreme implementations, the angle meaning it was possible for only part of the side-window to be lowered but at least the Italians were more thoughtful than the Germans; in 1954, facing a similar challenge with the side-glass on the 300 SL (W198 1954-1957) gullwing, Mercedes-Benz simply fixed the panes, ventilation provided only by small quarterlights.  Neither flow-through ventilation or air-conditioning was available so driving in a gullwing could be hot and sticky experience and there's a reason they're sometimes seen being driven (at low speeds and not on public roads) with at least one door open. .  The tumblehome is used by high-performance cars because of the aerodynamic advantages it confers, reducing frontal area an allowing the curve of the greenhouse to be optimized for air-flow, lowering resistance.  Because of great advances made during the late twentieth century, refinements to tumblehomes no longer deliver the 3-5% improvements in a drag coefficient (CD) which once was possible, engineers now pursuing factional gains.  The origins in cars however lay in the quest for more interior space and for mass-market vehicles, bulging out the sides gained the odd vital inch and the technique, combined with curved side glass, has become almost universal although there has been the odd deviation.  Stylists are predicting tumblehomes are likely to become more exaggerated as sides need to be bulkier to meet more rigorous side-impact regulations and roof-lines are lowered slightly in the quest to reduce drag.

Lindsay Lohan in tumblehome blonde wig.

What professional hair stylists call “the tumblehome” is a triangulated shaping which is most cases can’t be achieved without an expert application of product and when sported by models on photo-shoots, it’s common for the angles and an illusion of volume to be achieved with engineering no more complex than a sheet of cardboard (cut to suit) being attached with hairclips to the back of the head.  The look can however be achieved with synthetics which can be persuaded sustainably to behave in a way human hair naturally resists and Lady Gaga (b 1986) made a tumblehome wig a signature feature of her “Fame Monster” period (2009-2010).  With natural hair, a tumblehome with hair a little shorter than that of Lady Gaga’s wig is sometimes technically achievable given the right hair and a generous use of product the sideways projection would be noticeably less.

Lady gaga in Fame Monster mode.

The tumblehome style with the exaggerated elongations al la Gaga is rarely seen and usually represents a lot of work.  However, many take about as much effort to avoid the similar geometry of the “pyramid head”: a triangular shape with a flat crown area which flares to a wide bushy shape at the ends.  A function of length and weight for those with curly hair, pyramids happen usually when the strands are of almost uniform length and the curls tend to “stack”, the weight meaning the roots sit flattest on the scalp while towards the ends where the effective volume (hair + space) is greatest, the curled strands move sideways, unlike the behavior of straight hair which is purely downwards.

Lindsay Lohan with pyramid head, Saturday Night Live, 2004.

Stylists recommend layers as the best tactic to minimize the triangulation, the strategy essentially to create longer, diagonal layers to frame the face, meaning the remaining curls “sit into each other”.  What this does is simply physics, the layering on the surface reducing the weight, increasing the percentage of the volume on the crown area and although some are resistant, the best results will probably be achieved if the hair is cut dry because it will be presented at its natural weight.  When wet, the moisture content will disguise the extent of the left-right movement and exaggerate the up-down.  The shorter the layers of course the more effective the amelioration but this can be too radical for some so clients need to be turned into realists.

Only

Only (pronounced ohn-lee)

(1) Without others or anything further; alone; solely; exclusively.

(2) No more than; merely; just.

(3) As recently as.

(4) In the final outcome or decision.

(5) Being the single one or the relatively few of the kind.

(6) Having no sibling or (less common) no sibling of the same sex (also a noun in this context).

(7) Mere (obsolete).

(8) Single in superiority or distinction; unique; the best.

(9) But (introducing a single restriction, restraining circumstance, or the like).

(10) Except (frowned upon by some).

Pre 900: From the Middle English oonly, onli, onlych, onelich & anely, from the Old English ānlich, ānlīc & ǣnlich (like; similar; equal; unique, solitary, literally "one-like”), from the Proto-Germanic ainalīkaz (one + -ly).  It was cognate with the Old Frisian einlik, the obsolete Dutch eenlijk, the German ähnlich (similar), the Old Norse álíkr, the Old High German einlih, the Danish einlig and the Swedish enlig (unified).  Synonyms include solitary & lone in one context and peerless & exclusive in the other.  Only is a noun, adjective, adverb & conjunction, onliness, onlyer & onlier are nouns and onliest & onlest are adjectives ; the noun plural is either onlys or onlies (both rarely used).

Only’s use as an adverb (alone, no other or others than; in but one manner; for but one purpose) and a conjunction (but, except) developed in Middle English.  In English, the familiar distinction of only and alone (now usually in reference to emotional states) is unusual; in many languages the same word serves for both although Modern German has the distinction in allein/einzig.  The mid fifteenth century phrase "only-begotten" is biblical, translating Latin unigenitus and Greek monogenes; the Old English word was ancenned. The term "only child" has been in use since at least the early eighteenth century.  The derived forms were once in more frequent use than now.  Someone who only adheres to the particular thing mentioned, excluding any alternatives. Onlyism (definitely non-standard) used to be quite a thing in Christianity in matters where there were different versions of documents and among Church of England congregations (often in the same parish) some were once adamant that only a certain edition of the Book of Common Prayer was acceptable and the others represented revisionism, heresy or, worse of all, smelled of popery.  Thus there were 1549-onlyiers, 1559-onlyiers, 1562-onlyiers etc.  The same factionalism of course continues to exist in many religions (and in secular movements and institutions too) but onlier has faded from use.  The adjectives onliest & onlest (a superlative form of only used almost exclusively in the US) are now rare and onlest is used mostly in African American Vernacular English (AAVE).  

No ambiguity intended: Lindsay Lohan in sweatshirt from the I ONLY SPEAK LILOHAN range.  Lilohan is a non-geographically specific dialect of English, the name a contraction derived from that of its creator.  It appears to use a conventional US English vocabulary but is delivered, with an occasionally halting delivery, in an accent vaguely Russian or Eastern European.  Pedants would of course have preferred the text to be: "I SPEAK ONLY LILOHAN".

The construct of the Old English ānlīc being ān (one) + -līc (-ly), only is thus understood in Modern English as on(e) + -ly.  One was from the Middle English oon, on, oan & an, from the Old English ān (one), from the Proto-West Germanic ain, from the Proto-Germanic ainaz (one), from the primitive Indo-European óynos (single, one).  It was cognate with the Scots ae, ane, wan & yin (one); the North Frisian ån (one), the Saterland Frisian aan (one), the West Frisian ien (one), the Dutch een & één (one), the German Low German een; the German ein & eins (one), the Swedish en (one), the Norwegian Nynorsk ein (one), the Icelandic einn (one), the Latin ūnus (one) & Old Latin oinos and the Russian оди́н (odín); doublet of Uno.  The –ly prefix was from the Middle English -ly, -li, -lik & -lich, from the Old English -līċ, from the Proto-West Germanic -līk, from the Proto-Germanic -līkaz (having the body or form of), from līką (body) (from whence Modern German gained lich); in form, it was probably influenced by the Old Norse -ligr (-ly) and was cognate with the Dutch -lijk, the German -lich and the Swedish -lig.  It was used (1) to form adjectives from nouns, the adjectives having the sense of "behaving like, having a likeness or having a nature typical of what is denoted by the noun" and (2) to form adjectives from nouns specifying time intervals, the adjectives having the sense of "occurring at such intervals".

The different phonological development of only and one was part of the evolution of English.  One was originally pronounced in the way which endures in only, atone and alone, a use which to this day persists in various dialectal forms (good 'un, young 'un, big 'un etc), the long standard pronunciation "wun" emerging around the fourteenth century in southwest and west England.  William Tyndale (circa 1494–1536), who grew up in Gloucester, used the spelling “won” in his translations of the Bible which were first published between 1525-1526 and the form slowly spread until it was more or less universal by the mid-eighteenth century.  The later use as indefinite pronoun was influenced by the unrelated French on and Latin homo.

Tyndale, before being strangled and burned at the stake in Vilvoorde (Filford near Brussels).  Woodcut from The Book of Martyrs (1563) by John Foxe (circa 1516-1587).

The bishops in England probably neither much noticed nor cared about Tyndale’s phonological choice but they certainly objected to his choice of words in translation (church became “congregation” and priest became “elder”) which appeared to threaten both the institution of the Church and the centrality to Christianity of the clerical hierarchy.  Tried for heresy in 1536, he was pronounced guilty and condemned to be burned at the stake although, for reasons not documented, he was, after a ceremonial defrocking, strangled until dead while tied to the stake, his corpse then burned.

Pink-themed vegan protest in Perth, Western Australia:  Activist herbivore Tash Peterson (b 1995; in sensible running shoes, right) and unidentified associate (in strappy stilettos, left), spreading their PSAs (public service announcement).  Geographically, Perth is the world's most isolated regional capital city but culturally, it's plugged-in and stuff happens there.

Although transgressions are something the grammar Nazis rush to correct with more than their usual relish, the placement of “only” as a modifier matters only if putting it one place or the other would hinder clarity; there’s never been an absolute grammatical rule and, as long as the meaning is clear, it’s probably better to adopt whatever is the usual conversational style.  In his authoritative A Dictionary of Modern English Usage (1926), the not always tolerant Henry Fowler (1858–1933) cited the report of a man who "only died a week ago" and while acknowledging the error defended the use on the basis the placement represented "the order that most people have always used and still use", adding "any risk of of misunderstanding was chimerical".  Strictly speaking, although “We only fuck vegans” means a life consisting of nothing else, most would understand it as the view of one prepared to contemplate intimacy only with vegans.  The best compromise to adopt is probably that recommended for handling the split infinitive: Use the more exact “We fuck only vegans” in formal use (such as in writing) and the more natural, conversational “We only fuck vegans” otherwise.  Note that a PSA on a sign held aloft at a protest, although obviously “in writing” is not an example of formal use; it’s just part of the conversation.  Care though must be taken to avoid ambiguity, especially in writing because the intonations of speech and other visual clues are not there to assist in the conveying of meaning.  Were one to say “She only fucks vegans after midnight”, quite what is meant isn’t clear and the sentence is better rendered either as “she fucks only vegans after midnight" (ie carnivores will be accommodated only before midnight) or “she fucks vegans only after midnight” (ie vegans must wait for "the stroke of the midnight hour").  In informal English, “only” is a common sentence connector but again, this should be avoided in formal writing where “only” should be placed directly before the word or words that it modifies.

Front door of a Salvation Army store.

Like language, signs exist in context and the nuances are examples of one of the ways the famous “everything is text” works.  Tash Peterson's signs are written language but operate as speech, their form denoting "shouting".  A static sign on a door is different.  If that sign reads “SERVICE ANIMALS ONLY”, literally that means only such creatures are allowed in (ie no humans) and obviously that's not what's intended.  Also, that the text is in upper case does not imply “shouting” as it would in an e-mail or a social media post because the message remains conversational.  Traditionally the term "service animals" was limited to the “seeing eye” dogs used by the visually impaired but in some jurisdictions, there’s been a bit of mission-creep in the category with a menagerie of “support animals” now added to the lists though the dogs are still the most numerous.  It’s doubtful any humans have ever read the sign and departed disappointed, thinking themselves not wanted, but just in case, one Salvation Army store included some small print: “For the safety of our customers and team we kindly ask that all other pets are kept outside the store.”  Perhaps “For the safety of our customers and team, kindly we ask other pets are kept outside the store” would have been more elegant but Henry Fowler would have called that “linguistic pettifogging”.  Even if unnecessary in this case, clarifying small print appended to a sign on a door can be helpful but on one of Tash Peterson’s protest banners, it would be absurd.

Pistanthrophobia

Pistanthrophobia (pronounced piss-an-thruh-foh-bee-uh)

(1) The fear of trusting one's partner in a romantic relationship.

(2) A fear of trusting people because of dreadful past experiences.

1990s: A compound word, the construct being the Ancient Greek πίστις (pístis) (trust; faith in others; belief; truth), from the primitive Indo-European béydtis (equivalent to πείθω (peíthō) (I persuade) +‎ -τις (-tis) (the suffix added to verb stems to form abstract nouns or nouns of action, result or process)) + anthro- (a  (non-standard) alternative form of anthropo- (a combining form of the Ancient Greek ἄνθρωπος (ánthrōpos) (man, human being) +‎ -phobia (fear of a specific thing; hate, dislike, or repression of a specific thing) from the New Latin, from the Classical Latin, from the Ancient Greek -φοβία (-phobía); it was used to form nouns meaning fear of a specific thing (the idea of a hatred came later)).  Pistanthrophobia is a noun; the noun plural is pistanthrophobias.

Pistanthrophobia is one of the “phobias” which owes its existence to the internet and may even have pre-dated the world-wide-web because some archived bulletin boards (there were several devoted to phobias which is something of a hint about the nature of the obsessives who stalked the boards at 2400 baud) includes entries for the word although it difficult to work out quite when first it appeared.  With the arrival of social media, self-help pages flourished and, of course, few need as much help as pistanthrophobics.  Whether, prior to the internet, there were many fewer phobias as exist today isn’t known but since the 1990s many more have been described, some obviously for jocular effect and while some seem only to state the obvious (atomosophobia said to be the “fear of atomic explosions”) pistanthrophobia surely is a helpful addition because it must be a common condition.  It’s not however a medical diagnosis and has never appeared in any edition of the American Psychiatric Association's (APA) Diagnostic and Statistical Manual of Mental Disorders (DSM), those who clinicians find to be pistanthrophobic handled with whatever is thought to be an appropriate diagnosis under the DSM’s five criteria for categorizing phobias: (1) animal type, (2) natural environment type, (3) blood-injection-injury type, (4) situational type & (5) other types.

Although originally applied to those who avoided romantic attachments because of a traumatic experience in a prior relationship, the term is also applied to those unable to trust others because of instances of rejection or betrayal.

Pistanthrophobia was first defined as the fear of being hurt by someone were one to enter into a romantic relationship and from the start the condition was thought something induced by a painful experience in a prior relationship.  The consequence of such traumas manifest as a fear of again suffering hurt and as an avoidance strategy, intimacy with others is avoided.  Like many phobias, the symptoms can vary in nature and extent but they may include (1) panic and fear, which can excessive, persistent, and wholly disproportional to the level of threat, (2) escape desires which typically manifest as a strong urge to get away from the triggering event or individual, (3) a shortness of breath (or hyper ventilation for those prone to panic attacks), (4) a racing heartbeat and (5) trembling and the onset of cold sweats.  Sufferers will change their patterns of behavior to the point of avoiding not only close contact but even casual conversations with anyone who might be a potential partner.  They will be seen to become guarded and socially withdrawn and at the very least, unresponsive to flirtation although it’s more likely they’ll become stressed and attempt to disengage from the interaction.  Flirtation is to a pisanthrophobe a threat and they become hyper-vigilant to the point where their heightened sensitivity will mean they misinterpret even benign conversations.  However, there are those who merely have no wish, for whatever reason, to enter into any romantic arrangements even when there’s been no preceding trauma and they are not pistanthrophobic.  The phobia is specific to the reactions and can exist even where there’s no history of trauma.

Vladimir Putin (b 1952; president or prime minister of Russia since 1999, centre) and Yevgeny Prigozhin (b 1961, noted multi-faceted Russian oligarch, left).

Mr Putin might find it hard again to trust others after his recent experience with Mr Prigozhin.  The president probably thinks he’s entitled to feel betrayed because Mr Prigozhin, as a billionaire oligarch and CEO of Mr Putin’s private army really was a thing of his creation and in sending a military convoy along the highway to threaten Moscow (a revolt, mutiny or insurrection depending on one’s interpretation), Mr Prigozhin was showing at least ingratitude.  Also not very trusting is likely to be Mr Prigozhin who may have little faith in the deal he agreed to: political exile in Russia’s neighboring vassal state of Belarus and an indemnity from prosecution in exchange for ending his quixotic revolt.  It’s certainly plausible he’ll avoid a Russian courtroom but his thoughts have probably turned to things such as accidents like falling from a tall building, being run over by several trucks, inadvertently ingesting poison or being exposed to a nerve agent like Novichok.  As Ernst Röhm (1887–1934; chief of the Nazi Sturmabteilung (the stormtroopers (the SA)) discovered in 1934, there can be consequences even for the things one hasn’t done but people think one might and as Mr Prigozhin probably impressed on Wagner’s troops more than once: “For everything you do there’s a price to be paid.”

Sanpaku

Sanpaku (pronounced san-pach-ew)

An eye in which the sclera (white of the eye) is visible on three sides of the iris rather than the usual two (left & right).

Pre 1700s: A borrowing from the Japanese 三白 (sanpaku) (three whites) or 三白眼 (sanpaku gan) (three-white eyes).  Sanpaku is a noun and sanpakuish is an adjective; the noun plural is sanpakus.

Sanpaku (三白) (three whites) & Sanpaku gan (三白眼) (three-white eyes) are Japanese terms from traditional Chinese & Japanese medicine and they describe the “condition” in which the white of the eye is visible either above or below the iris when looking straight ahead.  Although the word was popularized by Japanese educator and nutritionist Nyoichi “George” Ohsawa (1893–1966) when he published the book You Are All Sanpaku in 1965, the idea had existed in oriental medicine probably for centuries although it’s impossible accurately to determine its origin.  It was mentioned in the diaries of at least one nineteenth century US Navy physician but attracted no interest in the West until the release of Ohsawa san’s book.  In Western medicine the phenomenon is described as “lower scleral show” or “inferior scleral show”, terms which are merely descriptive because (1) it’s something thought within the range of normality, (2) is indicative of no other mental or physical states and thus (3) is generally not considered a medical condition requiring treatment and is attributed variously to (3a) normal variation in eyelid anatomy, (3b) transient facial expression or gaze direction, (3c) traumatic injury or (3d) age-related tissue changes.  There are orbital or eyelid conditions (the best known being a thyroid-related eye disease causing lid retraction) which can induce a sanpaku-like appearance but instances are vanishingly rare.  In short, the medicalization of sanpaku is thought a product of superstition so predictably, on social media, sanpaku eyes seem to have a cult following.

Sydney Sweeney (b 1997) displaying her Sanpaku inferior (sclera (white of the eye) visible below the iris), Met Gala, Metropolitan Museum of Art, Manhattan, New York City, May 2025.  Lovely though her eyes are, it may be not many have long focused on them.

In You Are All Sanpaku, Ohsawa san described sanpaku as a condition which indicated physical and mental imbalances and discussed its significance in relation to diet and overall well-being.  Historically, sanpaku is believed to have entered oriental medicine from the Japanese practice of “face-reading” and those with eyes observed thus were considered ill-fated and destined for a life filled with misfortune, culminating often with an early demise.  It gained a following on social media by the usual means: celebrity association.  Diana, Princess of Wales, President John Kennedy & Marilyn Munroe, all of whom died young, were all sanpakus and as Ohsawa san warned in You Are All Sanpaku: the eyes indicate someone's fate, signifying imminent danger or an “early and tragic end.”

Diana, Princess of Wales (1961-1997, far left), Marilyn Monroe (1926–1962, centre left), Billie Eilish (b 2001. centre right) and John Kennedy (JFK, 1917–1963; POTUS 1961-1963, far right).  Three died young in tragic circumstances but Ms Eilish remains fit and well.

The original basis of “face reading” isn’t known but as a diagnostic tool it focused on the matter of “balance”, something important also to the physicians of Antiquity who identified the “four humors”: flegmat (phlegm), sanguin (blood), coleric (yellow bile) & melanc (black bile) which were the causative agents of the four personality types, the phlegmatic, the sanguine, the choleric & the melancholic.  In the East, signs of sanpaku meant a man’s whole system (physical, physiological and spiritual) was out of balance, something caused by sins committed against the order of the universe, accounting for his sickness, unhappiness or insanity.  Ohsawa san noted that in the West, such folk had come to be called “accident prone” and they were the ones who should take note of the warning from sanpaku, nature’s tap on the shoulder.  A practical author of self-help texts, Ohsawa san recommended sanpaku eyes should be treated with a macrobiotic diet, focusing on brown rice and soybeans, something on which he had real expertise as the founder of the macrobiotic diet.

By their sanpaku you shall know them: Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945, left), crooked Hillary Clinton (b 1947; US secretary of state 2009-2013, centre) and cult-leader Charles Manson (1934-2017, right).

Interestingly, the beliefs about sanpaku are culturally variable although universally it’s held the condition determines one's fate.  In the Japanese tradition those consequences are ill fate and misfortune while the Chinese associate sanpaku with good luck and wealth and this divergence has interested cultural anthropologists who study the symbolism and mythologies of different societies.  The tradition divides the eyes into "yin sanpaku" and "yang sanpaku", the roots of this the ancient Chinese concept of yin & yang, representing the duality of opposing yet complementary forces in the universe.  Yin and Yang are fundamental concepts in Chinese philosophy and represent complementary and interconnected aspects of the universe. Yin is associated with qualities such as darkness, femininity, passivity, and coldness, while Yang is associated with light, masculinity, activity, and warmth. They’re seen as opposing forces that are in a constant state of dynamic balance and they exist within all phenomena, including human physiology, nature and society.  In this they differ from the (wholly un-related) concept in particle physics of matter and anti-matter.  Matter is the familiar stuff which is much of the physical universe (particles such as protons, neutrons, and electrons) while anti-matter consists of particles with the same mass as their matter counterparts but carrying an opposite charges.  When matter and anti-matter particles come into contact, they can annihilate each other, releasing energy.  Ying and Yang, mutually dependent, live in peaceful co-existence.

The Mean Girls (2004) crew demonstrate the range:  Rachel McAdams (b 1978, far left) & Lindsay Lohan (b 1986, centre-left) are in the part of the population who are either not sanpakus or the effect is imperceptible.  Lacey Chabert (b 1982, centre-right) is in the group with a separation around 1 mm while Amanda Seyfried (b 1985, far right) displays up to 2 mm depending on her expression.

A quadrilateral meeting to discuss German war guilt reparations and allied debts accumulated during World War I (1914-1918): Raymond Poincaré (1860–1934; President of France 1913-1920, far left), Andrew Bonar Law (1858–1923; Prime Minister of the United Kingdom 1922-1923, centre-left), Benito Mussolini (1883-1945; Duce (leader) & Prime-Minister of Italy 1922-1943, centre right) and Georges Theunis (1873–1966; Prime Minister of Belgium 1921-1925 & 1934-1935, far right), 10 Downing Street, London, December 1922.

Before it became a meme, this was an obscure photograph which until the twenty-first century had appeared only in some specialist history texts but as the internet achieved critical mass, memes became a thing and Mussolini’s sanpaku eyes were a gift for the meme-makers, most captions suggesting the duce may have had a sudden premonition of his own unfortunate end although others offered: “I feel naked without a moustache”, “I think I have imposter syndrome”, “Oh God, I just pooped my pants”, “I know one of these men is a Freemason but I don't know which” and “I wonder if they can tell I've smoked some weed”.  However, although not noted as a mystic, he may have sensed another's impending death, “sitteth at the right hand”, Andrew Bonar Law then having only months to live.

Princess Beatrice, Mrs Edoardo Mapelli Mozzi (b 1988).  Until she appeared at a royal wedding in the fascinator she made famous (some humorless souls would have said infamous), she was most noted for her lovely sanpaku eyes.

In Japanese face reading, yang sanpaku eyes (white part visible above the iris) reveal a person's dark and sinister nature, the eyes indicating the unstable mental state suffered by individuals exhibiting uncontrollable aggression, such as psychopathic murderers or serial killers.  Yin Sanpaku Eyes (sclera visible below the iris) signify a different physical or mental imbalance, one caused by the abuse of drugs, alcohol, and sugar which disrupt the body's equilibrium.  Although discouraged by all in the profession except the odd, entrepreneurial cosmetic surgeon, treatment options are available to “correct” scleral show and the most effect treatment is aesthetic plastic surgery, specifically the procedure called blepharoplasty, which can correct the appearance of the eyes.  The construct of blepharoplasty was blepharo- +‎ -plasty.  Blepharo- was from the New Latin, from the Ancient Greek βλέφαρον (blépharon) (eyelid; a feature resembling an eyelid) and -plasty was from the Ancient Greek πλαστός (plastós) (molded, formed) which now has the special meaning in medicine meaning "repair, restoration or re-shaping of part of the body with a surgical procedure".

Alexandria Ocasio-Cortez (AOC, b 1989, US Representative (Democrat-New York) since 2019 and one of "the squad") displaying her Sanpaku superior (sclera visible above the iris).

Casual observation suggests sanpaku eyes are far from rare and there are said to be three classes: (1) those with at least a .25 mm (.0098 inch) space between the iris and the upper and lower eyelids, (2) those with a separation of 1 (.0394 inch) mm and (3) those with a gap of 2 mm (.0787 inch) or more.  The concition need not manifest as something symmetrical (in the vertical axis), the two elements being (1) Sanpaku inferior: white visible below the iris and (2) Sanpaku superior: white visible above the iris, the latter said often induced when a subject is frightened or physiologically stressed).  However although “estimates” have been published, neither the prevalence of the condition nor the distribution within the three (unofficial) groups have ever been the subject of a reputable epidemiological study; because “sanpaku eyes” is not a recognised medical or anthropometric category; funding would thus be hard to secure although, as a purely observational and statistical exercise, presumably not many ethics departments would much be troubled.  So, lacking a defined diagnostic entry, there is no standardised measurement threshold and estimates of prevalence are thus almost certainly speculative and thus unreliable.  Those with sanpaku eyes should not too much dwell on the numbers and instead flutter their eyelashes and enjoy the admiring glances.

Mean Girls four-way phone call: Eye-rolls (Amanda Seyfried, top right) don't count, a sanpaku defined only by separation maintained when looking ahead or to the side.

Humans are not the only species with a sclera but we are untypical in it being so visible.  That humans even have white scleras has interested linguistic anthropologists, evolutionary biologists and other researchers, some offering the Cooperative Eye Hypothesis which suggested the distinctive appearance evolved as a mechanism with non-verbal communication could be enhanced.  According to this conjecture, the high visibility of the iris & pupil against the white background allows an interlocutor more easily to track eye movements, helping individuals to understand where others are looking during interactions.  Observational studies revealed the way humans and other great apes move their heads and eyes in different ways, humans relying more on eye movements than head movements to see where someone else is looking.  Apes, without the white component in their eyes, tend more to move the whole head.  Not all support the "cooperative eye" faction but it’s an interesting approach to understanding the evolutionary significance of the human eye's appearance and the sophistication of communication is certainly a noted difference between humans and apes.

If the human eye lacked a white sclera it would mean the “messaging” in facial expressions (a non-verbal clue in communication) would have evolved a little differently; Paris Hilton (b 1981) illustrates (digitally altered image).  Ms Hilton has brown eyes but often wears blue contact lens.

As far as is known, all living creatures on Earth came ultimately from a single event which can be said to be the origin of life because at this time, there is no evidence of other living things anywhere in the universe.  Everything else is speculative; life may have started (or arrived) here many other times but for whatever reason not thrived and around the universe there may be many forms of life; some may be more advanced than us or we may be unique in our scientific and technological mastery.  The single point of origin is why we share elements of DNA (Deoxyribonucleic acid, the so-called “building-blocks of life”) with our cats, dogs, goldfish and bananas so, unsurprisingly, in living creatures, eyes are common, often in pairs but unlike those in humans, not all are out-growths of a brain although, in many of the lineages of the Metazoa they are neurally derived and remain tightly integrated with the central nervous system.

A nice pair of boobies.  Charmingly, blue-footed boobies are known to be monogamous, pairs often staying together for life.  Like us, birds are two eyed vertebrates although except for the old outlier (like owls) their eyes, for good reasons, shifted to the sides.  Note how the booby’s eye differs from that of a human.

As a general principle it all depended on the developmental origin and phylogeny (the evolutionary history of groups of organisms).  In vertebrates (mammals, birds, fish etc), the eye evolved as an evagination (a growth outward) of the forebrain during embryogenesis (the process by which an embryo is formed and develops).  Cephalopods (octopus, squid etc) differ in that while the optic lobes of the brain are large and closely connected, the eye is not literally a brain protrusion; thus, while neurally integrated, the eyes are not brain outgrowths.  Arthropods (insects, crustaceans and such) have compound eyes formed from ectodermal (of the The outermost of the three tissue layers in the embryo of a metazoan animal) tissues which connect to the brain via optic nerves and are thus also neurally connected but not developmental extensions of the brain itself.  Many cnidarians (such as the box jellyfish) possess complex lens eyes but lack a centralized brain, their eyes peripheral sensory structures connecting to nerve rings rather than a true brain.  Many invertebrates have relatively simple photoreceptors which can be thought of as “eyespots” which can be distributed across body tissues, the best contemporary comparison probably the sensors now so ubiquitous in electronic devices.

Boobies, one step at a time.

A booby is a seabird in the genus Sula, part of the Sulidae family.  Boobies are closely related to the gannets (Morus), which were formerly included in Sula, the genus created in 1760 by the French naturalist Mathurin Jacques Brisson (1723-1806).  The name was derived from súla, the Old Norse and Icelandic word for the other member of the family Sulidae, the gannet.  The English name booby was based on the Spanish bobo (stupid) as the tame birds often landed on board sailing ships, where they were easily captured and eaten.  As well as a popular addition to the diet of sailors for whom meat other than fish was a rarity, it was fortuitous for many, the Admiralty's archives revealing boobies often mentioned as having been caught and eaten by shipwrecked sailors.

Mr Andrew Mountbatten Windsor in police car, under arrest, February, 2026.

If humans had eyes free of a white sclera (like the booby and many birds), our appearance would be quite different, illustrated by a digitally edited image of (the former prince/duke/admiral etc) Andrew-Mountbatten Windsor (b 1960), rendered as a cartoon by Vovsoft.  However, the use of that image to demonstrate the point may not have been the best choice because, in the original, his expression didn’t appear greatly different.

As well as charming eyes, boobies also have interesting feet.  The distinctive blue feet (the result of pigments ingested from their diet of fish) also play a part in the bobby’s mating ritual although not exactly in the podophilic sense familiar in a sub-set of humans.  In the spring mating season, the bird’s feet become a bright turquoise blue and, to demonstrate their health and vitality, conspicuously they will display them to potential partners.  The job done, as their eggs hatch, the blue hue fades to something less vivid.  One aspect of their behaviour which amused the ornithologists who first observed it was that if among fishers unloading their catch, it tossed a small fish from the by-catch, a booby will take it and waddle off somewhere to enjoy it in solitude rather than gulping it down as in common in many species.  Like penguins, although ungainly on land, they are skilled plunge divers which used their streamlined bodies and air sacs “fly” through the water, catching their prey at high speed and they hunt in "packs", coordinating their movement to maximize the catch.  Boobies have been recorded diving from as high as 90 m (300 feet), their speed upon entry estimated at around 100 km/h (60 mph).