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goanna300
August 29th, 2003, 6:12 PM
Australian aborigines use a "Moiety" system which avoids in-breeding when living in small nomadic groups. It is universally understood by local people and they consider the system mathematically obvious. Non-aborigines find it confusing.

(Take a look at the attachment).

It's not complicated in a cultural context, e.g. at a barbecue,
"So your name's Christopher. How do you do? Please introduce me to your wife Stephanie and your kids Emile and Emily."

This is because every Christopher you've ever met has a wife called Stephanie. All Christophers have sisters and brothers called Christopher or Christine. All their Children are called Emile and Emily. All their fathers are Emiles.

If you are a Chris, then every other Chris wants to borrow your car and may have his eyes on your wife Stephanie. You know how to avoid your in-laws. There are only 8 skin names so the system finally sinks in.

I work with Aboriginal people. This week I constructed a geneological database for their families. The skin groupings fit in perfectly, the database works. But my calculation fields were most inelegant indeed.

I have been looking for a simple equation that shows that if my name is x, then my future wife is X*n ; my children are all x/n, etc.

Anybody like to solve this anthtropological puzzle?

Steve

goanna300
August 29th, 2003, 6:18 PM
I see the attachment didn't get through Iam going to try to send the attachment again. If this fails, take a look at the North-Eastern and Eastern Arrertne Skin Names diagram at http://aboriginalart.com.au/culture/arrernte2.html

Steve

goanna300
August 29th, 2003, 6:20 PM
Another try at sending the attachment.

dave
August 30th, 2003, 4:18 AM
Interesting, but I don't know what it has to do with maths :)

blike
August 30th, 2003, 8:17 AM
He needs a mathmatical description of it :/

goanna300
August 30th, 2003, 2:31 PM
More like an equation, as I said...
"If my name is x, then my future wife is X*n"
or, in context,
Let Pengarte be X
Let Ampetyane be Y
What is the ratio of X:Y?