Regarding that now closed discussion about "notability wording"...

I've answered Richard on his talk page: https://www.wikidata.org/wiki/User_talk:Richard_Arthur_Norton_(1958-_)#Your_question_about_what_it_means_when_we_say_%22item%22_or_%22topic%22_in_Wikidata

Hopefully it clarifies a few things for folks.

I.E.  we should take the time to do more linking to the Glossary much more in various areas of our documentation so that folks know what we mean when we use a particular term, instead of just leaving the term as simple text.  This is especially important in pages regarding Datatypes, APIs, etc. where it might be confusing for folks coming into Wikidata brand new but quite versed in other systems using similar terminology.  "topic" versus "item", etc.