Dozenal Society

01272017, 02:19 PM
Post: #1




Dozenal Society
Is anyone familiar with the Dozenal Society? (Link: http://www.dozenal.org/) The organization is advocating that we switch over from Base 10 to Base 12 in every day life.


01272017, 02:52 PM
Post: #2




RE: Dozenal Society
Hi Eddie. Hmm, I don't think that will ever happen. We are too entrenched in base 10. I once repurposed (with Katie's help) the 12c+ calculator as a base 12 machine; I forget which two keys I used as A and B. It was fun to play with, but had no practical value.


01272017, 03:43 PM
Post: #3




RE: Dozenal Society
Great idea & a very nice link.
My own hobbyhorse is base 6, having the great advantage of simplicity & economy of type face, not requiring any additional symbols for additional digits. Counting would look like this: Decimal style 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,11, 12..... Sixers style 1, 2, 3, 4, 5, 6, 21, 22, 23, 24, 25, 26, 31..... I prefer using the symbol 1 for zero in an attempt to demystify zero, many people not being sure zero is a number (sadly I don't know how to do the same trick with negatives & imaginaries), & reducing the values of the following single digits by one. The reading of "1" would be "one" to ease people into the new system, similarly "2" would be read as "two" etc, however the values of the digits would all be one less than traditionally, again to reduce the learning curve. I have suggested this outline to some friends but have met with a general negative response. 

01282017, 03:50 AM
Post: #4




RE: Dozenal Society
(01272017 03:43 PM)Gerald H Wrote: My own hobbyhorse is base 6 ... I have suggested this outline to some friends but have met with a general negative response. You are in good company. Isaac Asimov proposed universal adoption of base 6 (I forget which of his books that essay appeared in). He too received underwhelming support. <0ɸ0> Joe 

01282017, 05:18 AM
Post: #5




RE: Dozenal Society
President Ford's effort to convert the U.S. to metric was a lot easier, but he failed anyway.
http://WilsonMinesCo.com (Lots of HP41 links at the bottom of the links page, http://wilsonminesco.com/links.html ) 

01292017, 11:39 PM
Post: #6




RE: Dozenal Society
(01272017 03:43 PM)Gerald H Wrote: Great idea & a very nice link. If 1 is used for 0 in sixers style, am I correct in assuming 2 is used for 1, 3 is used for 2, etc? 

01292017, 11:41 PM
Post: #7




RE: Dozenal Society
(01272017 02:52 PM)Don Shepherd Wrote: Hi Eddie. Hmm, I don't think that will ever happen. We are too entrenched in base 10. I once repurposed (with Katie's help) the 12c+ calculator as a base 12 machine; I forget which two keys I used as A and B. It was fun to play with, but had no practical value. That is wild. I would love to see the program if you find it. I agree, we are far too invested in base 10, which is fine. Base 10 comes in handy for dividing, halving, and working with factors of 5 and 9. Eddie 

01292017, 11:42 PM
Post: #8




RE: Dozenal Society
My blog entry on base 12: http://edspi31415.blogspot.com/2017/01/b...ciety.html


01302017, 06:15 AM
Post: #9




RE: Dozenal Society
(01292017 11:39 PM)Eddie W. Shore Wrote:(01272017 03:43 PM)Gerald H Wrote: Great idea & a very nice link. Yes, Eddie, you are correct. 

01302017, 06:16 AM
Post: #10




RE: Dozenal Society
And to think that until disabused of the notion, I misheard the famous library cataloguing system as "The Duodecimal System"  and thought it was tied to the operation of base 12 numbers.
My goodness, what a nerd.... 

01312017, 06:42 PM
Post: #11




RE: Dozenal Society
(01272017 02:19 PM)Eddie W. Shore Wrote: Is anyone familiar with the Dozenal Society? (Link: http://www.dozenal.org/) The organization is advocating that we switch over from Base 10 to Base 12 in every day life. One question: Why? Tom "Tenfingers" Lake Tom L I think therefore I amDescartes I think therefore you areGorgias You're not here to thinkArmy Sergeant 

01312017, 07:33 PM
Post: #12




RE: Dozenal Society
(01312017 06:42 PM)toml_12953 Wrote:(01272017 02:19 PM)Eddie W. Shore Wrote: Is anyone familiar with the Dozenal Society? (Link: http://www.dozenal.org/) The organization is advocating that we switch over from Base 10 to Base 12 in every day life. There's really only one good reason to have a larger base: to be able to represent more fractions exactly. 12 = 3*2*2, so it can represent 1/2 and 1/3 fractions exactly (and all their powers and combinations). 10 = 2 * 5, 1/2 and 1/5 are exact, still 2 prime numbers so there's no clear advantage in using 12 vs 10. Since we have 10 fingers, 10 seems more logical, although 1/3 fractions are perhaps more common than 1/5 (can't prove that, though). Why 12? I don't think 12 is good enough, if the goal is to have more fractions, we should use 30. 30 = 2*3*5, so 1/2, 1/3 and 1/5 (and all their powers and combinations) can be represented exactly. Quite difficult to remember 30 different symbols, though. On the other hand, hardware uses only one base (2), so it would make more sense to move to a binary system (or a power of 2, octal, hex, etc) than a dozen. 

02012017, 12:26 AM
Post: #13




RE: Dozenal Society
(01312017 07:33 PM)Claudio L. Wrote: There's really only one good reason to have a larger base: to be able to represent more fractions exactly. If we all adopted the HP 32SII/33S/35S "double dot notation", then we could represent ALL fractions exactly, using decimal notation. Example: 1+2/3 is entered directly into the 32SII/33S/35S as "1.2.3". Although the RESULT in those machines is not exact, the NOTATION is. Thus instead of writing \[4\frac{5}{6}1\frac{2}{3}=3\frac{1}{6}\]you could write simply \[4.5.61.2.3=3.1.6\] This would be the best of both worlds; the familiarity of base 10, and the concise precision of fractions in other bases. Bonus feature: HP invented it. <0ɸ0> Joe 

02032017, 02:21 PM
Post: #14




RE: Dozenal Society
(01312017 07:33 PM)Claudio L. Wrote:(01312017 06:42 PM)toml_12953 Wrote: One question: Why? On the other hand, I only have five fingers as well! Tom L Tom L I think therefore I amDescartes I think therefore you areGorgias You're not here to thinkArmy Sergeant 

02032017, 08:26 PM
Post: #15




RE: Dozenal Society
(02032017 02:21 PM)toml_12953 Wrote: On the other hand, I only have five fingers as well! Bad pun. I assume intentional, but if not, even better! Bob Prosperi 

02062017, 06:16 PM
Post: #16




RE: Dozenal Society
ps:
the Jethro Bodine school of ciphering has open matriculation for the digitally challenged. Shoes are optional for undergraduate study and unnecessary for graduate study. BEST! SlideRule 

02072017, 02:21 AM
Post: #17




RE: Dozenal Society
Meanwhile, on the gripping hand (you gents have set this one up too well to resist), the fingers are not supple enough to use for counting. Thus, base 12, using the 6 fingers each of the two right arms, is the natural choice.


02072017, 07:53 AM
Post: #18




RE: Dozenal Society
(01272017 02:19 PM)Eddie W. Shore Wrote: Is anyone familiar with the Dozenal Society? (Link: http://www.dozenal.org/) The organization is advocating that we switch over from Base 10 to Base 12 in every day life. I use base 16 everyday in my work (and my HP 16C / DM 16L are put to good use), but never had to use base 12 even once, ever. Since I still have 10 fingers, though, I'm not going to advocate switching over to a not decimal system for everyday life. Are those Dozenal people from the GATTACA movie, with 6 finger on each of their hands ? 

02072017, 02:11 PM
Post: #19




RE: Dozenal Society
The idea to use base 12 is by no means new. If I remember correctly, Pascal wrote a paper on computing in base 12 in the first half of the 17th century, and some decades later another famous mathematician (Leibniz?) advocated seriously for a change from the decimal system to base 12.
Historically, we owe a lot to the sexagesimal system of the Babylonians: The 360°, the 12 hours, the 60 minutes, and 60 seconds. Thus, a base with factor 12 is still omnipresent. During the French revolution they tried to use base 10 everywhere. The day should have 10 hours with 100 minutes each, the week should have 10 days. There exist even revolution clocks of famous clockmakers like Berthoud that stick to this system. Exept for what we now know as "gon" (which I personally do not like very much because you frequently use 1/3rd of a right angle but almost never 1/5th) nothing survived. Thomas 

02082017, 02:20 AM
Post: #20




RE: Dozenal Society
(02072017 07:53 AM)vido Wrote: ... but never had to use base 12 even once, ever. What? You've never ordered a dozen donuts? Ceci n'est pas une signature. 

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