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On 4 August 2021, it was proposed that this article be moved to Before present. The result of the discussion was not moved. |
I'm not a scientist, just someone who is interested in pre-history in the Americas. There's a lot of confusion and contradictions in Wikipedia articles dating pre-historic human activities in the Americas. For example, in the scholarly and popular literature and in Wikipedia articles, I found three different -- and often contradictory -- dating systems used for the Folsom tradition and related articles: first, radiocarbon years (or uncalibrated radiocarbon years) which date the Folsom tradition between 11,000 and 10,000 years ago; second, more recent and presumably more accurate calibrated radiocarbon years which date Folsom from 13,000 to 12,000 years ago; and third, Before Present (BP) which cites either of the two ranges of dates. BP will also become more inaccurate with time if one doesn't know (and most don't) that BP doesn't mean "before present" but before 1950.
One example of why trying to get dating right is important is the transition of the Clovis culture ( mammoth hunting) to the Folsom tradition ( bison hunting) and the ongoing controversy about the role of humans in the extinction of many species of megafauna in the Americas. Was the extinction due to human hunting or climate change or something else? Did mammoths become extinct at the same time as the end of mammoth hunting by the Clovis people or a thousand years earlier or later? Did the Clovis people hunt the mammoth to extinction? Accurate dating is crucial to answering that question.
Moreover, for the average reader the different dates in Wikipedia articles for prehistoric events are confusing. All three dating systems -- radiocarbon years, calibrated radiocarbon years, and BP -- are cited and "reliable sources" exist for all.
If my understanding of the issue of three dating systems is correct, I would advocate that BCE (or BC) based on calibrated radiocarbon dates be the preferred usage in Wikipedia articles rather than BP or uncalibrated radiocarbon dating. BCE is more familiar to the reader and avoids the now mostly minor but increasing inaccuracy of BP. Smallchief ( talk) 11:55, 21 April 2023 (UTC)
ceterum censeo ... that - the "present" ever meant and still means "today" and not 1950, - which latter, in case of radiocarbon dating, might be named "BL" in honour of Libby, otherwise "BFN" (Before Nineteen-Fifty), similar to "b2k" in icecore datigs, - consequently, those "intelligent" "scientists" would live today in the year 60 AP (after present)! In addition, and usually in the same papers, the time scales - if only for better comparability - must run chronologically from left to right, i.e. from the older to the more recent data (unfortunately, too many people seem to be completely incapable of using their plotting programs correctly). Further: Please note that neither ky nor kya are allowed SI-units of time. The only correct ones are "a" for year, or "ka" for thousand years. Please refer to "Unified code for Units of Measure at http://unitsofmeasure.org. HJJHolm ( talk) 15:15, 1 January 2024 (UTC)
As of the current revision of the article (" Before_Present"), the first sentence in the section " Before Present#Radiocarbon dating" says:
Radiocarbon dating was first used in 1940.
That does not seem to be correct. For one reason, the article about " Radiocarbon dating" -- (which that sentence itself contains a link to, and seems to rely upon) -- says (in the first sentence of its second paragraph)
The method was developed in the late 1940s at the University of Chicago by Willard Libby.
For another reason, the article about " Willard Libby" says, in its FIRST sentence, that
Willard Frank Libby (December 17, 1908 – September 8, 1980) was an American physical chemist noted for his role in the 1949 development of radiocarbon dating, a process which revolutionized archaeology and palaeontology.
It seems obvious to me that something ( radiocarbon dating) which did not exist until its "1949 development", did not get used in 1940.
Perhaps it was a TYPO? Maybe it should have said "1950" -- ? --
Any advice or other comments? Thanks, from Mike Schwartz ( talk) 06:17, 9 July 2023 (UTC)
This article should link to the page egocentrism as the likely cause for the appearance of this time scale. Should we create a dedicated section on the causes, or put it near the beginning of the article? 2A01:CB08:5F:8700:329C:23FF:FEA2:DF4F ( talk) 15:17, 28 January 2024 (UTC)
Should the references to AD (Anno Domini, a religious designation) be changed to CE (Common Era, a more neutral one), or is this appropriate when talking about the Gregorian calendar, created by the Catholic Church? Scyg ( talk) 12:37, 14 June 2024 (UTC)