Hamlet famously warned that there are more things in Heaven and Earth than we can ever dream of, and that sentiment rings true when we consider the countless terms whose origins have slipped through the cracks of history. In this roundup we’ll explore ten baffling names and phrases that still stump scholars, scientists, and curious minds alike—yes, those very 10 things no one seems able to pin down.
1 10 Things No One Knows: The “p” Part of pH Has No Confirmed Meaning

Ever found yourself checking the pH of a swimming pool, your own urine, or even a bottle of water marketed as low‑pH? That tiny two‑letter abbreviation pops up everywhere, telling us how acidic or alkaline something is. Lower numbers mean more acid, higher numbers mean more base.
Now, set aside what the scale actually measures and stare at the letters themselves. It seems simple—just ‘pH’—yet the mystery behind the ‘p’ has baffled scientists for over a century. The scale was invented in 1909 by Danish chemist Søren Peder Lauritz Sørensen. While the ‘H’ unmistakably stands for hydrogen, the meaning of the lowercase ‘p’ remains a riddle.
Most textbooks claim the ‘p’ denotes ‘power’, and even the Carlsberg Foundation, where Sørensen worked, officially calls it the ‘Power of Hydrogen’. In German the term translates to ‘Potenz’, and in French to ‘puissance’, both meaning power. Alternatives such as ‘potential’ or ‘percent’ have also been floated, but Sørensen never wrote down his intention, leaving scholars guessing.
Adding to the confusion, Sørensen labeled his positive electrode with a tiny ‘p’, and in his notebook he sketched a formula involving hydrogen ion concentration and electrode potential, eventually abbreviating it to ‘pH’. The original intent behind that solitary ‘p’ is still an open question.
2 We Don’t Know the Exact Origin or Meaning of Attila the Hun’s Name

Attila the Hun looms in history like a shadowy warlord alongside Genghis Khan and Alexander the Great. His reputation as a fearsome ruler is cemented, yet the true meaning of his name has slipped through the cracks of time.
Scholars suspect the name may stem from a pre‑Turkic tongue, possibly breaking into roots that mean “father” and “land”, though this remains speculative. Other theories suggest it could reference a river or even the word for steel, but no consensus has emerged.
Some researchers argue the name has Gothic origins, again linking it to the concept of a father. Evidence shows the name existed before the famous Attila, yet the original etymology and its significance to contemporaries are still unknown.
3 Jaws Is Not The Name of the Shark; It Means Nothing

When you hear the title Jaws, you instantly picture a massive great‑white shark tearing through the ocean. It seems obvious, but the word ‘Jaws’ was never intended as the shark’s proper name.
Author Peter Benchley spent months researching his novel and, when the manuscript was finally ready, he and his publisher wrestled with over a hundred possible titles—options like *Leviathan Rising*, *The Stillness in the Water*, and *The Jaws of Death* were all tossed around.
In the end, with no clear winner, Benchley simply shouted ‘Jaws!’ The editor asked what it meant, and Benchley replied, ‘I don’t know, but it’s short, fits on the cover, and might just work.’ The title ultimately stuck, even though it holds as much meaning as the word ‘boat’ or ‘danger’ does for a shark.
4 Ivar the Boneless’ Nickname Meaning is Lost to History

Fans of the History Channel’s *Vikings* will recognize Ivar the Boneless, portrayed by Alex Høgh Andersen, as the fierce son of Ragnar Lothbrok. The real Ivar died in 873, and his nickname has sparked endless speculation.
Legend has it that Ragnar bestowed the moniker after a prophecy warned that Ivar would be born with a crippling condition, leading to twisted limbs and weak bones—hence ‘Boneless’. Some historians link the nickname to osteogenesis imperfecta, a brittle‑bone disease, but no definitive proof exists.
Thus, while the saga paints a vivid picture, the actual origin of ‘Boneless’ remains a mystery, with theories ranging from a literal medical condition to a symbolic epithet that has been lost to the ages.
5 No One Knows What Nintendo Actually Means

Nintendo may dominate modern gaming, but its roots stretch back to 1889 when Fusajiro Yamauchi founded Nintendo Koppai to sell traditional playing cards. The name ‘Nintendo’ itself is shrouded in ambiguity.
A popular explanation parses the kanji into ‘leave luck to heaven’, with the first character suggesting either heaven or the mischievous tengu—a mythic creature tied to gambling. This dual reading aligns with the company’s early focus on card games and the notion of chance.
Other interpretations propose that ‘Nintendo’ simply means ‘the company allowed to sell hanafuda cards’. Yamauchi never documented a definitive meaning, and even his great‑grandson admits the true origin is unknown.
6 Knights Fight Snails in Medieval Art But It’s Not Clear Why

Medieval manuscript margins often showcase whimsical battles between armored knights and sluggish snails—a motif that puzzles modern scholars. Unlike Renaissance realism, medieval art favored stylized figures and fantastical scenes.
These snail‑versus‑knight depictions appear in numerous codices, yet there is no historical record of giant snails ever menacing medieval Europe. The prevalence of the motif suggests symbolic intent rather than literal observation.
Proposed explanations range from snails symbolizing resurrection, representing the Lombards, reflecting class struggle, or even alluding to hidden sexual meanings. Scholars remain divided, and no single theory has achieved consensus.
7 There’s A Line in Dante’s Inferno That Has No Translation

Dante’s *Inferno* is a cornerstone of world literature, yet one cryptic line in Canto 31—*Raphèl mai amècche zabì almi*—defies translation. Spoken by the giant Nimrod, the phrase appears to be deliberate gibberish.
The nonsensical string may echo the biblical Tower of Babel, indicating a loss of language, or it could reflect Nimrod’s madness. Some suggest transcription errors over centuries, but the line’s true meaning remains elusive.
8 The Final Transmission of a Crashed Plane Is Still A Mystery

Mysterious final messages from vanished flights often become the stuff of legend, and the 1947 disappearance of BSAA Flight CS‑59 is no exception. The aircraft was en route from Buenos Aires to Santiago when it sent its last Morse transmission.
The message, received by a Chilean radio operator, read: ‘ETA Santiago 17:45 hrs. STENDEC.’ Sent at 17:41, the crew was only minutes from landing, yet the final word ‘STENDEC’ made no sense in any known language.
When the operator asked for clarification, the pilots repeated the baffling word twice more before radio silence fell. Decades later, mountaineers discovered the wreckage roughly 50 miles from Santiago, confirming a crash.
Investigations suggest a sudden snowstorm blinded the crew, causing a miscalculation of distance and a fatal descent. However, the odd ‘STENDEC’ term still puzzles experts.
One popular theory proposes that ‘STENDEC’ is an anagram of ‘DESCENT’, hinting that the crew was reporting a rapid loss of altitude. Others argue it might be an abbreviation for a string of emergency descriptors.
Some researchers speculate hypoxia from cabin depressurization could have scrambled the pilots’ speech, turning a routine phrase into gibberish. Yet the seasoned radio operator’s skill makes a simple mistake unlikely.
Alternative suggestions include a coded message about severe turbulence, or a mis‑spaced phrase that lost its intended meaning. None of these explanations fully satisfy the mystery.
Regardless of the true origin, the enigmatic ‘STENDEC’ continues to intrigue aviators and linguists alike, a lingering echo from a flight that vanished just moments before safety.
9 The Meaning of Old No 7 on Jack Daniels Bottles Has Never Been Verified

Jack Daniel’s iconic label bears the cryptic phrase ‘Old No. 7 Brand’, prompting countless fans to wonder what the numbers truly signify. Theories abound, from the founder’s favorite digit to the count of recipe attempts.
A biographer uncovered that the distillery was originally registered in District 7 for tax purposes, and when the district changed, Jack kept the ‘old 7’ as a subtle protest. Yet the company’s current master distillers admit they have no definitive answer.
10 We Don’t Know Which State Was The 39th or The 40th

Listing the United States in the exact order they entered the Union is a trickier task than it appears, thanks to a peculiar historical mix‑up involving the 39th and 40th states.
In 1889, President Harrison signed both North and South Dakota into statehood alongside Montana and Wyoming. While North Dakota is commonly listed as the 39th and South Dakota as the 40th, the president reportedly shuffled the paperwork and never read the documents, leaving the precise sequence ambiguous—a difference of mere seconds that remains unresolved.

