Interesting theory. Although 9 goes little to far.
Wikipedia gives
Brahmi numerals - Wikipedia as origin of ours, but those are unrecognizable.
"Hindu-Arabic numerals, set of 10 symbols—1, 2, 3, 4, 5, 6, 7, 8, 9, 0—that represent numbers in the
decimal number system. They originated in India in the 6th or 7th century and were introduced to
Europe through the writings of Middle Eastern mathematicians, especially
al-Khwarizmi and
al-Kindi, about the 12th century. They represented a profound break with previous methods of counting, such as the
abacus, and paved the way for the development of
algebra."
Hindu-Arabic numerals | History & Facts
As my soft-spoken and brilliant linguistics professor was wont to say...
wont | Origin and meaning of wont by Online Etymology Dictionary
wont | Origin and meaning of wont by Online Etymology Dictionary
Meaning: "accustomed," Middle English contraction of Old English wunod, past participle of wunian "to dwell, inhabit, exist; be…
" wise scholars are accustomed to be prepared for new information leading to revised attribution." As usual, she left us to figure that on own. Our class in Old English ended with two 'A' grades for my roommate and myself. I because my roommate tutored me, he because he was the equal of the professor. The two remain the most intelligent human beings I have met, AFAIK.
That is the background. Here is the story:
The "Brahmi" formed the foundation of India-European symbolic logic including much of semantics and numerology. True! However, they made rather a mess of it from a numerical perspective because they really did not conceive numerology, just a set of symbols;
That "...just a set of symbols" provided the crucial representational basis for some Hindus a few hundred years later to make zero real, and derive all numbers from 1,2,3,4,5,6,7,8,9,0.
I'll not object if the zero is to be placed first since...
Once Muḥammad ibn Mūsā al-Khwārizmī...
Al-Khwārizmī | Muslim mathematician
...found those Hindu ideas he used them to write "Algebra' and "algorithm" among other books. The rest is modern history.
Thus I choose to refer to the modern numerals as "Arabic" for if they had not been used to invent algebra and analytic representational logic we'd probably never have had our nice numbering systems but might still be attempting to make the Roman system work.
We probably would never have had Mathematics, Chemistry, Agriculture, Astronomy or Geography as we now do have it not been for those Arab thinkers.
From an etymological perspective it is easier to see specific contributions in several Romance languages than it is in English. Why? Because Romance languages derived from either Classical Latin (e.g. Italian, Romansch, Castilian [aka: Spanish) or Vulgar Latin (i.e. language used by the rulers to govern distant tribes)(i.e. Portuguese, Provençal, Catalão)
while English is a West German tongue most closely related to modern Dutch and Danish. Partly as a result of that linguistic history the Romance languages, especially the ones thatt have languages derived from vulgar Latin, coincidently have higher Arabic content than other languages because they were rules by Arabs during the same periods that Arabs were busy developing modern mathematics, agriculture and stellar navigation. Latterly, most of those have felt threatened by those Germanic and Frankish tongues so they have developed fairly exotic ways to assess the provenance of their languages.
So, we know that ~10% of the Portuguese language derives from Arabic but there is no way to know for English precisely because English has no clear national identity. After all what country has the largest number of people for whom English is their mother tongue? Obvious answer: India. Same question for Portuguese? Brazil. Why the difference? For our purposes that actually is important.
The Romance languages and the primary Germanic ones have clear and regular grammar and standard processes for importing and using vocabulary. Their more jingoistic linguists count derivations and fight over issues that would not begin to work for English. That is because those languages carry a particular cultural history and thus a certain consistency.
English has the largest number of words of any extant language precisely because there are not any standards. Dialectical differences in English are astonishing but almost everyone pretends there are not such differences. For example, I offer the following gathering, one of each native speaker fo English: Indian from Kerala, Pakistani from Punjab, Australian from Darwin, US from Enterprise, AL and another from Boston, MA, English from Bristol and another from Lindisfarne. 100% probability they'll have serious problems communicating.
Long story, but that is the problem of the Arabs of the 5th to 10th centuries was that they wanted to travel, understand,and communicate more. They also had a strong desire to spread their thoughts. Partly because their language was hard for other people to adopt, (not that they were so adept at coercion as were the Romans) so they used their newly developed technologies and numerology. Thus they spawned what came to be called "the Enlightenment". Once they taught everyone they found how to use Algebra, Algorithms, Agriculture (scientifically, that is), Astronomy and Geography what happened?
Everyone went loony with new ideas so Copernicus, Leonardo da Vinci, Newton and many more had the tools they needed to communicate beyond the limits of traditional language. That, in the end, enabled Nicolai Tesla, Thomas Edison, Space X and Tesla. What is common? A rigid adherence to mathematical integrity. Everything else follows.
Now to prove I can make this bizarre discourse OT for the thread her goes:
Periods vs commas matter in the same way metric vs Imperial matter.
Metric works because all things are represented within a strict logical unified system. Everyone understands, nobody need translate anything to anybody else. If one does not understand one must study the subject. Clear and direct.
Periods do work the same way. Periods act as simple separators between thousands. Commas act to form a list, or to separate portions of a single related thought.
If we follow such a convention globally the confusion ends. If we don't it does not.
I say that with a strong opinion because I live comfortably with both systems. With commas as separators people do sometimes get confused. With periods I have not encountered such confusion. It is really too bad that while inventing Algebra and Algorithm he did not define number grouping syntax just a bit more than he did.