Jc3s5h added a comment.

In https://phabricator.wikimedia.org/T95425#1603371, @daniel wrote:

> @Jc3s5h I don't see how any of the differences you mention are relevant in 
> the context of precision/uncertainty.


Let me give you another example. If you put in a measurement of 725, it goes in 
the database as amount = 725, lowerBound = 724, upperBound = 726. The 
interpretation is fairly obvious.

The death date of Benjamin Franklin in the data base is given (in JSON) as

"https://phabricator.wikimedia.org/P570":[{"mainsnak":{"snaktype":"value","property":"https://phabricator.wikimedia.org/P570","datavalue":{"value":{"time":"+1790-04-17T00:00:00Z","timezone":0,"before":0,"after":0

So this means he was born no earlier 5 PM April 16 1690, Philadelphia time, and 
no later than 5 PM April 16, 1690, Philadelpia time. Clearly the statement does 
not cover the actual range of times that Franklin died. Considering that vast 
majority of dates in Wikidata suffer from this flaw, time as implemented in 
Wikidatat serves as a poor model for anything.


TASK DETAIL
  https://phabricator.wikimedia.org/T95425

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To: Jc3s5h
Cc: Addshore, Lydia_Pintscher, Jc3s5h, Snipre, mgrabovsky, daniel, thiemowmde, 
Aklapper, Wikidata-bugs, aude, Malyacko



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