Why Twelve?

By William Bezanson

Have you ever noticed how dominant the number 12 is?  There are 12 months in a year, 12 signs of the zodiac, 12 inches per foot, 12 people on a jury, 12 grades in most school systems, 12 items in a dozen, and so on.

And there are many other instances of the number 12 that are common in western civilization.  Further, there are many remarkable mathematical properties of 12 that I have not mentioned.  And there are many instances of 12 in the Bible, which forms a cultural and mythological basis for western society.

So, why is the number 12 so dominant in the world, or at least in western culture?  Why did humanity not pick the number 10 to be the dominant one, or 4, or 7, or 60, each of which could be supported for significance? What I am seeking is some unique property of 12 (or of the abstract notion of “twelveness”) that makes that specific number the only candidate for dominating, among its peers.  What makes it stand out?

These questions stayed on my back burner, with the heat on low but never turned off, for many years.

Then along came Google.  What a wonderful tool for research!  I asked Google one day, “Why Twelve?”, and was led to a very satisfying answer. The top result was a paper with that title by the modern Belgian philosopher Koenraad Elst. What a thrill it was to find it! 

Elst explains that the most natural way to divide a circle is into 12 equal parts.  By “most natural” is meant without any external aids, other than a compass and a straightedge ruler.  These two tools were the only ones permitted by the classical Greek mathematicians. No calculations are permitted, no measuring, no protractors, nothing else.

First, Elst has us draw a circle, using a compass. Then, with the compass still set to the same radius as for that circle, draw another circle with its centre anywhere on the circumference of the original circle.           

Next, using the two points where the circles intersect, draw two more circles, still with the same radius, and repeat that process using each point of intersection of circles with the original circles, so that you have six circles arranged symmetrically around the original circle.

We now have six intersection points arranged uniformly around the original circle, so the points are necessarily spaced by 60 degree intervals (360/6).  Now join each of those intersection points to the original circle’s centre with straight lines, using the straightedge ruler.

Finally, note that each of the outer circles intersects its two neighboring outer circles.  Draw a straight line from each of those intersection points to the centre of the original circle. 

Notice how those last lines exactly bisect the angles between the pairs of earlier lines. Thus, each angle between adjacent lines is 30 degrees (60/2).  There are 12 of them, spread uniformly around the circle.  Thus, the circle has been divided into 12 equal segments by remarkably natural means, namely, the classical, pure methods used by the ancient Greek geometricians.  No fancy computations or measurements were done. Everything was very natural. 

As for Elst’s suggestion that this is the “most natural” way to divide a circle, such a suggestion is appealing, but it is open to speculation.  I tend to believe it, but I have not yet been able to prove it.  I will prove it, or try to find a counter example of a more natural way.  Also, I need to prove that the original construction results in exactly six circles. But, until then, I find his idea a very attractive explanation of why the number 12 is dominant.

The circle is one of the most fundamental aspects of nature.  It symbolizes the fullness of time, or the cycle of birth-life-death-rebirth, leading to immortality, as in the famous Alchemical symbol of the Ouroboros, the snake circled around eating its own tail. The circle’s shape is the destination of all matter that is drawn together gravitationally:  a sphere.  Orbits of planetary bodies tend towards the circular, although other influences distort them into elliptical, but at least the tendency is there.  We see circles everywhere:  our eyes, our finger rings, raindrops (when viewed from below), the Moon and Sun, and so on.

So, it would seem natural for early humans to consider how a circle can be deconstructed.  Humans love to take things apart to see how they are made.  The circle would be one of the early candidates for such analysis.  And Elst’s argument, which I have summarized here, provides a very good basis for humanity’s early understanding that 12 is the natural number to use for dividing up so much of its experience with the circles of life.

 

I have often wondered if advanced beings on other planets would also adopt the number 12 as a deconstructing factor.  For example, would other civilizations, on other planets, adopt a zodiac of 12 signs? 

My speculation is Yes, they would do so.  First of all, circles are very likely universal concepts.  Nature everywhere, including on all other planets, would very likely provide similar manifestations of circles as has been the case on Earth: spherical planetary bodies, raindrop shapes, fruits with a round profile, and so on.  Or at least this would be the case if those other locations had the same rules of Physics as we do here, which is highly likely.  And a similar analysis as given here would very likely lead such civilizations to divide up their circles into 12 parts, as we have done. 

The number 12 would not be used, of course, on other planets.  That number is formed from the Arabic number system, based on a decimal, positional notation, which is unlikely to have developed elsewhere.  But the notion of “Twelveness” would have evolved, I would guess. The names and textual formulation of the many instances of twelveness would differ widely, but their underlying notion would be the same.

To my way of thinking, 12, or twelve, or more abstractly, Twelveness, is a universal concept, that exists everywhere. 

 

So … Why 12?  Because it is our local, concrete instantiation of the abstract notion of Twelveness, which in turn underlies the most natural way to divide a circle, which is a fundamental symbol of life and its processes, into equal parts.

 

One (highly speculative) research area for me involves investigating what is the dominant number on other planets.  My hope is to find a past-life regression therapist who might collaborate on this project, and ask those clients who remember lives on other planets about numbers there.  Or perhaps deep memories of some people may be fruitful.  Even more speculative, it may be that alien visitors might be willing to share their numerical experiences.  If such investigation is possible, then such scenarios provide at least some hope of testing my hypothesis.

This article is just a start on documenting my ongoing interest in the number twelve and why it is dominant.  I plan to expand this article, through further research and writing, and it may possibly become a book on its own.

________ 

 

William Bezanson is a retired engineer who has become an author of systems design and world stewardship books.  His latest is I Believe:  A Rosicrucian Looks at Christianity and Spirituality.  His website is www3.sympatico.ca/bezanson1.  He lives with his wife in Ottawa, Canada.

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Comment by William Bezanson on March 4, 2015 at 1:50pm

Thanks, Shelley.  Am I still submitting articles properly?  I've lost track of who is the editor responsible for Spirituality.  Let me know if I should submit differently.  / Bill

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