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Incan Counting System Decoded?
Discovery News ^ | Feb 3 2004 | By Rossella Lorenzi

Posted on 02/03/2004 6:04:59 AM PST by vannrox

Incan Counting System Decoded?


By Rossella Lorenzi, Discovery News


Learn how to add 9+7 on the yupana abacus.

Jan. 29, 2004 ? The Inca invented a powerful counting system that could be used to make complex calculations without the tiniest mistake, according to an Italian engineer who claims to have cracked the mathematics of this still mysterious ancient population.

Begun in the Andean highlands in about 1200, the Inca ruled the largest empire on Earth by the time their last emperor, Atahualpa, was garroted by Spanish conquistadors in 1533.



Long been considered the only major Bronze Age civilization without a written language, they left mysterious objects that, according to the latest research, would have been used to store units of information.

Recent studies are investigating the hypothesis that elaborated knotted strings known as khipu contain a hidden written language stored following a seven-bit binary code. Nobody, however, had been able to explain the meaning of these geometrical tablets known as yupana.

Different in size and shape, the yupana had been often interpreted as a stylized fortress model. Some scholars also interpreted it as a counting board, but how the abacus would have worked remained a mystery.

"It took me about 40 minutes to solve the riddle. I am not an expert on pre-Columbian civilizations. I simply decoded a 16th century drawing from a book on mathematical enigmas I received as a Christmas present," engineer Nicolino De Pasquale said.

The drawing was found in a 1,179 page letter by the Peruvian Felipe Guaman Poma de Ayala to the King of Spain. A simple array of cells consisting of five rows and four columns, the drawing showed one circle in the right cell on the bottom row, two circles in the next cell, three circles in the other one and five circles in the last cell of the row. The same pattern applied to the above rows.

According to De Pasquale, the circles in the cells are nothing but the first numbers of the Fibonacci series, in which each number is a sum of two previous: 1, 2, 3, 5.

The abacus would then work on a base 40 numbering system.

"Instead, all scholars based their calculations according to a base 10 counting system. But calculations made to base 40 are quicker, and can be easily reconverted to base 10," Antonio Aimi, curator of the exhibition "Peru, 3,000 Years of Masterpieces" running in Florence, told Discovery News.

"Since we lack definitive archaeological evidence, we tested this claim on 16 yupana from museums across the world. De Pasquale's system works on all of them," Antonio Aimi, curator of the exhibition "Peru, 3,000 years of masterpieces" running in Florence, told Discovery News.

The Inca's calculating system (see an example of how it works in the slide show) does not take into consideration the number zero. Moreover, numbers do not exist as graphic representations.

According to Aimi, in most cases the Inca made their calculations by simply drawing rows and columns on the ground. The unusual counting way is described in an account by the Spanish priest José de Acosta, who lived among the Inca from 1571 to 1586.

"To see them use another kind of calculator, with maize kernels, is a perfect joy... . They place one kernel here, three somewhere else and eight, I do not know where. They move one kernel here and there and the fact is that they are able to complete their computation without making the smallest mistake," Acosta wrote in his book "Historia Natural Moral de las Indias."

The claim has sparked a dispute among scholars.

Gary Urton, professor of Precolumbian studies at Harvard University, an authority on khipu research, told Discovery News: "The fact that an explanation can be constructed for one or even several yupana that conforms to this theory of a base 40 numbering system amongst the Incas is of some modest interest.

"How would one explain the many statements in the Spanish chronicles, both those written by Spaniards and by literate Andeans, who stated quite straightforwardly that the Inca used a base 10 counting system? This system is also attested in a mountain of early colonial documents that describe how the Inca organized their administrative system according to a base 10 counting system."

As Aimi concedes, the claim has the limits of any interpretative system that isn't proven with definitive historical evidence.

"We would need to find a Rosetta yupana, something similar to the deciphering of Egyptian hieroglyphics from the Rosetta stone. Since we can't have it, I would consider a strong evidence the fact that the system works on all yupana examined," he said.


TOPICS: Business/Economy; Constitution/Conservatism; Culture/Society; Extended News; Foreign Affairs; Government; Mexico; News/Current Events
KEYWORDS: ancient; artifacts; count; decode; education; found; godsgravesglyphs; history; inca; khipu; math; new; past; quipu; strange; system; understood; wonderful
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Very cool.
1 posted on 02/03/2004 6:05:00 AM PST by vannrox
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To: vannrox
"How would one explain the many statements in the Spanish chronicles, both those written by Spaniards and by literate Andeans, who stated quite straightforwardly that the Inca used a base 10 counting system?

Well, we use a base 10 counting system in everyday life, but we use a base 2 counting system in our calculating machines.

2 posted on 02/03/2004 6:11:16 AM PST by E. Pluribus Unum (Drug prohibition laws help fund terrorism.)
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To: vannrox
I have to dust off my "Chariots of the Gods" book collection.....
3 posted on 02/03/2004 6:21:34 AM PST by SpinyNorman
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To: E. Pluribus Unum
Where do you suppose we got our base-12 system?

And how well-developed could their civilization have been when they didn't know about wheels?
4 posted on 02/03/2004 6:25:37 AM PST by Redbob
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To: vannrox
Their problem now is that all their base now belong to us, ha ha ha.
5 posted on 02/03/2004 6:28:51 AM PST by Gothmog
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To: Gothmog
LOL!
6 posted on 02/03/2004 6:30:46 AM PST by Constitution Day
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To: Redbob
Where do you suppose we got our base-12 system?

What base 12 system?

And how well-developed could their civilization have been when they didn't know about wheels?

We are talking about their mathematical counting system.

You must have a mighty large inferiority complex to want to turn that into passing judgement on a civilization that died out hundreds of years ago.

7 posted on 02/03/2004 6:34:44 AM PST by E. Pluribus Unum (Drug prohibition laws help fund terrorism.)
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To: vannrox
"It took me about 40 minutes to solve the riddle. I am not an expert on pre-Columbian civilizations. I simply decoded a 16th century drawing from a book on mathematical enigmas I received as a Christmas present," engineer Nicolino De Pasquale said.

Memo to self: Must party sometime with that guy. Wooo hooo!

8 posted on 02/03/2004 6:41:24 AM PST by martin_fierro (97.238 percent of all statistics are made up on the spot)
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To: Gothmog
LOL! Damn, ya beat me to it. For Great Justice.
9 posted on 02/03/2004 6:42:03 AM PST by martin_fierro (97.238 percent of all statistics are made up on the spot)
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To: vannrox
How dare this man, this person think that he figured something out, when archaeologist have beaten their heads against this problem for decades! The nerve. He should have just shut up and not even bothered to mention it. Everyone knows that the only person who can make a judgment on something like this, is someone who has gone to university to study it. The arrogance of this fool to assume that he can understand this is amazing!
10 posted on 02/03/2004 6:42:17 AM PST by NotQuiteCricket
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To: E. Pluribus Unum
12 inches = 1 foot
12 times 12 = 1 gross
11 posted on 02/03/2004 6:43:16 AM PST by George from New England
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To: Redbob
"And how well-developed could their civilization have been when they didn't know about wheels?"

They were fixing to get ready to get a "round" to it...

12 posted on 02/03/2004 6:44:09 AM PST by azhenfud ("He who is always looking up seldom finds others' lost change...")
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To: George from New England
1x12=1 dozen
13 posted on 02/03/2004 6:45:12 AM PST by azhenfud ("He who is always looking up seldom finds others' lost change...")
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To: George from New England
6 pack, 12 pack, case............
14 posted on 02/03/2004 6:46:34 AM PST by singletrack (.............................................................................. .)
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To: George from New England
Okay, so where did we get our base-12 system?

And what difference does it make?
15 posted on 02/03/2004 6:49:47 AM PST by E. Pluribus Unum (Drug prohibition laws help fund terrorism.)
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To: vannrox
"We would need to find a Rosetta Yupana"

I'll check my High School Yearbook -- I think she's in there.

16 posted on 02/03/2004 6:50:22 AM PST by ClearCase_guy (I'm having an apotheosis of freaking desuetude)
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To: Howlin; Ed_NYC; MonroeDNA; widgysoft; Springman; Timesink; dubyaismypresident; Grani; coug97; ...
Just damn.

If you want on the list, FReepmail me. This IS a high-volume PING list...

17 posted on 02/03/2004 6:50:33 AM PST by mhking
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To: NotQuiteCricket
How dare this man, this person think that he figured something out, when archaeologist have beaten their heads against this problem for decades! The nerve. He should have just shut up and not even bothered to mention it. Everyone knows that the only person who can make a judgment on something like this, is someone who has gone to university to study it. The arrogance of this fool to assume that he can understand this is amazing!

Are you so closed to new ideas? He makes no claims, just presents an idea. Most of the article is devoted to other people's evaluations of his idea. Did you even bother to read the article?

18 posted on 02/03/2004 6:52:11 AM PST by cinFLA
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To: Redbob

And how well-developed could their civilization have been when they didn't know about wheels?

The wheel invention spread by diffusion, invented in Sumaria around 3500 BC; the Brits didn't know about the wheel until approximately three thousand years later. In fact, evidence points to Mexico as the only place that invented the wheel (thought to have been a toy) independent of the Sumarian version. The folks in the Americas didn't know what to do with it, in part probably because they didn't have draft animals.

OTOH, it sure as heck took a long time for ''superior cultures'' to decipher the Incan calculator.

19 posted on 02/03/2004 6:58:54 AM PST by elli1
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To: E. Pluribus Unum
1001110011010110010101000110101010011000110
20 posted on 02/03/2004 7:00:27 AM PST by Bikers4Bush (Flood waters rising, heading for more conservative ground. Write in Tancredo in 04'!)
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