Editing Duodecimal (section)

== Advocacy and "dozenalism" ==
[[William James Sidis]] used 12 as the base for his constructed language [[William James Sidis#Vendergood language|Vendergood]] in 1906, noting it being the smallest number with four factors and its prevalence in commerce.<ref>The Prodigy (Biography of WJS) pg [42]</ref>

The case for the duodecimal system was put forth at length in [[F. Emerson Andrews|Frank Emerson Andrews]]' 1935 book ''New Numbers: How Acceptance of a Duodecimal Base Would Simplify Mathematics''. Emerson noted that, due to the prevalence of factors of twelve in many traditional units of weight and measure, many of the computational advantages claimed for the metric system could be realized ''either'' by the adoption of ten-based weights and measure ''or'' by the adoption of the duodecimal number system.<ref name="New Numbers 1935"/>

[[File:Keys in dozenal clock.svg|thumb|A duodecimal clockface as in the logo of the Dozenal Society of America, here used to denote [[Key (music)|musical keys]]]]
Both the Dozenal Society of America (founded as the Duodecimal Society of America in 1944) and the Dozenal Society of Great Britain (founded 1959) promote adoption of the duodecimal system.

Mathematician and mental calculator [[Alexander Aitken|Alexander Craig Aitken]] was an outspoken advocate of duodecimal:
{{blockquote|text=The duodecimal tables are easy to master, easier than the decimal ones; and in elementary teaching they would be so much more interesting, since young children would find more fascinating things to do with twelve rods or blocks than with ten. Anyone having these tables at command will do these calculations more than one-and-a-half times as fast in the duodecimal scale as in the decimal. This is my experience; I am certain that even more so it would be the experience of others.|author=A. C. Aitken|source="Twelves and Tens" in ''The Listener'' (January 25, 1962)<ref>A. C. Aitken (January 25, 1962) [http://www.dozenalsociety.org.uk/archives/aitken.html "Twelves and Tens"] ''The Listener''.</ref>}}

{{Blockquote|text=But the final quantitative advantage, in my own experience, is this: in varied and extensive calculations of an ordinary and not unduly complicated kind, carried out over many years, I come to the conclusion that the efficiency of the decimal system might be rated at about 65 or less, if we assign 100 to the duodecimal.|author=A. C. Aitken|source=''The Case Against Decimalisation'' (1962)<ref>A. C. Aitken (1962) [http://www.dozenalsociety.org.uk/pdfs/aitken.pdf ''The Case Against Decimalisation'']. Edinburgh / London: Oliver & Boyd.</ref>}}

=== In media ===
In "Little Twelvetoes," an episode of the American educational television series ''[[Schoolhouse Rock!]]'', a farmer encounters an alien being with a total of twelve fingers and twelve toes who uses duodecimal arithmetic. The alien uses "dek" and "el" as names for ten and eleven, and Andrews' script-X and script-E for the digit symbols.<ref>{{cite web|url=http://www.schoolhouserock.tv/Little.html|archive-url=https://web.archive.org/web/20100206052053/http://www.schoolhouserock.tv/Little.html|url-status=dead|archive-date=6 February 2010|title=SchoolhouseRock - Little Twelvetoes|date=6 February 2010}}</ref><ref>{{Cite book|last=Bellos|first=Alex|url=https://books.google.com/books?id=FA_HwoEzSQUC|title=Alex's Adventures in Numberland|date=2011-04-04|publisher=A&C Black|isbn=978-1-4088-0959-4|pages=50|language=en|author-link=Alex Bellos}}</ref>

=== Duodecimal systems of measurements ===
[[Systems of measurement]] proposed by dozenalists include Tom Pendlebury's TGM system,<ref>{{cite web|last1=Pendlebury|first1=Tom|last2=Goodman|first2=Donald|title=TGM: A Coherent Dozenal Metrology|url=http://www.dozenal.org/drupal/sites_bck/default/files/tgm_0.pdf |date=2012|publisher=The Dozenal Society of Great Britain}}</ref><ref name="DSAGoodman2016">{{cite web |last=Goodman |first=Donald |title=Manual of the Dozenal System |date=2016 |url=http://www.dozenal.org/drupal/sites_bck/default/files/DSA_mods_rev.pdf |publisher=Dozenal Society of America|access-date=27 April 2018}}</ref> Takashi Suga's Universal Unit System,<ref>{{cite web|last=Suga|first=Takashi|title=Proposal for the Universal Unit System|url=http://www.asahi-net.or.jp/~dd6t-sg/univunit-e/revised.pdf |date=22 May 2019}}</ref><ref name="DSAGoodman2016" /> and John Volan's Primel system.<ref>{{cite journal |last1=Volan |first1=John |date= |title=The Primel Metrology |url=http://www.dozenal.org/drupal/sites_bck/default/files/DuodecimalBulletinIssue531.pdf |journal=The Duodecimal Bulletin |volume=63 |issue=1 |pages=38–60<!--be careful; the Duodecimal Bulletin, as one might expect, numbers its pages in duodecimal--> }}</ref>