| Larske added a comment. |
This is a slightly modified post from the project chat on March 18, 2018, see
Wikidata:Project_chat#interface_for_data_entering_is_confusing_for_time_value_with_century_precision
As I see it, it is a much bigger problem than the "18. century", "18 century" or "18st century" that seems to be the focus here.
On Help:Dates#Precision it is very clearly stated that a time value of '+1800-00-00T00:00:00Z' with a precision 7 should be interpreted as the 1800s or a time between years 1800 and 1899. But when you edit Wikidata "18. century" is shown for that time value. As "the 18:th century" (very similar to "18. century", "18 century", "18st century" or "18th century") in English (as well as some other languages) means 1700–1799 it is very likely that you enter a time value of '+1900-00-00T00:00:00Z' with precision 7 just to get it displayed as "18. century" e.g. for a person born in the 18th century. Today I see that user &beer&love has entered a birth date (P569) with "20. century" (i.e. time value '+2000-00-00T00:00:00Z') for a lot of people born between 1900 and 1999. See e.g. this edit of Secundino González (Q5639303).
https://www.wikidata.org/w/index.php?title=Q5639303&diff=652282000&oldid=625543088
This leads to my suggestion: The interface should be changed so that it says "1800s" (like on the help page) instead of "18. century" in order to reduce the risk of people entering this value for dates between 1700 and 1799? Maybe somehting else, like "1800-1899", should be choosen in order to tell if 1800s should be read as 1800–1809 or 1800–1899. --Larske (disk) 21:10, 18 March 2018 (UTC)
Cc: Larske, VIGNERON, Ayack, matej_suchanek, Hsarrazin, Lucas_Werkmeister_WMDE, Sjoerddebruin, Marsupium, PKM, Liuxinyu970226, TheDJ, Lydia_Pintscher, kaldari, Ricordisamoa, daniel, thiemowmde, Lucie, Amire80, Aklapper, Tobi_WMDE_SW, Wikidata-bugs, JulesWinnfield-hu, Addshore, Conny, Lahi, Gq86, GoranSMilovanovic, Soteriaspace, Jayprakash12345, JakeTheDeveloper, QZanden, LawExplorer, Srdjan_m, MuhammadShuaib, LNDDYL, Psychoslave, aude, Gryllida, Shizhao, Arrbee, Mbch331, Jay8g
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