Salish Numbering Systems and the Base-9 Question
I've spent a lot of time working with Indigenous language documentation materials, and one thing that comes up repeatedly in online discussions is the idea that certain Native American nations used base-9 or highly symmetric number systems. The Salish language family is usually at the center of these conversations, and the "sacred frequency of 9" framing tends to show up when people are trying to connect mathematical patterns to spiritual or ceremonial practices. Let me just walk through what the actual linguistic evidence says, what works in practice, and where the speculative stuff falls apart. First, the Salish language family isn't a single numbering system. It's a whole branch of languages spoken across the Pacific Northwest — Coast Salish, Interior Salish, and Southern Salish — and each sub-branch has its own counting structure. Some use base-10 with clear decimal organization. Others, like certain Shuswap (Secwepemc) dialects, have been described by linguists as using a vigesimal or modified base-20 system with interesting internal patterns. The base-9 claim tends to arise from people looking at specific number words and seeing a nine-cycle somewhere, then generalizing from there. It's not quite that clean in practice. I remember trying to standardize number data across three Salish dialects for a documentation project a few years back. I was expecting a consistent structure I could map onto a spreadsheet. What I actually got was something messier. One dialect group counted up to ten with a decimal pattern, then shifted to a compound structure above ten that referenced hands and possibly body parts. Another group had a clear ten-based system with a distinct word for twenty. A third had what looked like a base-5 sub-structure embedded inside a base-10 framework. There's no single Salish numbering system. That's the first thing to accept before anything else.
Now, the numerological angle. The number 9 shows up in a lot of Indigenous mathematical observations, and it's not arbitrary. In some Salish languages, the way numbers compound and repeat does create patterns that circle back near nine in certain counting exercises. But I need to be blunt about what that means and doesn't mean. It doesn't mean these languages are secretly base-9. It doesn't mean there's a hidden code that unlocks something mystical about the number nine. What it usually means is that when you look at how number words are built — especially with body-part counting or cyclic counting methods — the number nine tends to appear as a natural transition point. That's a linguistic observation, not a spiritual one, though people absolutely use it as both depending on the context. Here's where it gets practical. If you're working with Salish number data and you want to understand the patterns for real, start by getting the actual number words in the specific dialect you're studying. Don't work from generalized charts. I've seen too many people use a single reference table for all Coast Salish languages and then wonder why the patterns don't match. Get the primary source. Consult the documentation from the relevant language authority or community resource. The difference between accurate work and speculative work is usually just which source you started from. When I'm analyzing these systems, I break it down into a few steps. First, I write out the cardinal numbers from one through twenty in the target dialect. Second, I note any compounds or reduplications — that's where the interesting structure usually lives. Third, I check whether the system uses a base other than ten by looking at how numbers above ten are constructed. If you see something like "ten plus five" or "two tens minus one," you're dealing with a modified decimal system. If you see a clean "nine" as a grouping unit above which everything restarts, that's different, but I haven't found clear evidence of pure base-9 in any documented Salish language. The closest you get is systems where nine functions as a semantic or rhythmic boundary in counting practices.
There's also the issue of how these systems interact with modern tools. I've tried running Salish numbering data through Mathematica for pattern analysis, and it works fine for the structural side — you can map out the word compositions, find recurring morphemes, and visualize the counting cycles. But Mathematica doesn't understand the cultural context. It'll give you a graph that shows a repeating pattern every nine units if that's what the data shows, and it won't tell you whether that nine-cycle is meaningful in the language or just an artifact of how the number words happen to be structured. I learned that the hard way. My first draft of an analysis treated a morphological pattern as a systemic feature. It wasn't. Going back and talking to someone who actually speaks the language fixed that in about twenty minutes. One thing people often miss is that many Salish numbering systems were documented by outsiders who didn't fully understand what they were recording. The original records sometimes contain errors, approximations, or misunderstandings that get copied forward for decades. If you're doing any kind of serious work with these systems, you need to triangulate across multiple sources and, whenever possible, verify against living speakers. A written source from the 1950s might say a number word means "nine" when it actually means something quite different in context. I've caught this error in at least two published references by cross-checking against community language materials. Here's a concrete example of how to work with this. Say you're looking at a Coast Salish dialect where the number words go something like this: one, two, three, four, five, six, seven, eight, nine, ten. That looks decimal, right? But then above ten you see constructions that reference the number five in unexpected ways. Maybe fifteen is expressed as "ten and a half hand" or something structurally similar. That's actually common in Indigenous counting systems worldwide. It doesn't make the system base-5 or base-9. It makes it a body-part counting system with a decimal core. The nine cycle shows up because when you're counting on fingers, you naturally hit nine before you complete a full hand sequence. That's not sacred mathematics. That's human anatomy. But it's still interesting and worth documenting accurately.
Get the Full Details
For anyone actually wanting to explore this further, the best starting point is the Salishan language documentation project materials and the relevant tribal language department resources. Those give you the primary data. From there, if you want to analyze the patterns computationally, you can import the number word data into whatever tool you're comfortable with — Mathematica, Python, even a well-structured spreadsheet — and look for the structural patterns. Just don't mistake a pattern you find for evidence of a system that wasn't there. The data will tell you what it tells you. The trick is knowing when you're seeing a real feature and when you're seeing noise or a misreading. The broader point here is that Salish numbering systems are real, documented, and fascinating in their own right. You don't need to overlay a base-9 mystical framework on them to make them worth studying. The actual linguistic structures are complex enough without adding speculation. I've seen too many people skip the actual language data because they're already convinced of a numerological answer. The data usually says something different, and it's usually more interesting than the preconception. If you're working on a project involving these systems, start with the language sources, verify with speakers if you can, document what you find, and then — and only then — look for patterns. That order matters. Flip it and you'll end up with conclusions that look good on paper but fall apart the moment you check them against the actual language.
