| MisterSynergy added a comment. |
In T167989#4209937, @thiemowmde wrote:Let's say the size of a team was 50±0.5 people in 2017. Such a confidence interval tells me that there must have been some fluctuation over the year, but not a huge one.
What’s the exact meaning of such “±0.5 bounds”? It just transports the qualitative notion of “some fluctuation over the year” with a meaningless quantitative number that you somehow found appropriate. Say you had a team size of 49 most of the year which suddenly increased to 52 shortly before end of the year, and you managed to somehow calculate the quantity as given above. Unfortunately, at no time ever there were 50 people in your team, also your team size has never been within the bounds, and there have never been half team members, as you state by yourself.
This is a good example where bounds are (ab)used to replace either ranges (49–52), or where alternatively two independent claims (49 at beginning of the year, 52 at the end of the year) should be used instead. If you just wanted to state that the value is some approximation or estimation, we typically add qualifiers “sourcing circumstances (P1480): circa (Q5727902)” to the claim. This way we avoid to desperately quantify a qualitative claim.
Why do you think "passenger" is not a valid unit?
Countable sets such as “number of passengers/apples/…” do not have a unit (or better: have unit 1, in Wikidata in some situations represented as http://www.wikidata.org/entity/Q199). Constraints in Wikidata typically respect that (e.g. “number of participants” property at https://www.wikidata.org/wiki/Property:P1132, but have a look at the violations: https://www.wikidata.org/wiki/Wikidata:Database_reports/Constraint_violations/P1132#%22Units%22_violations).
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