thiemowmde added a comment. @daniel wrote:
> The reason 350±150 is shown as 400±200 is that rounding is applied based on > the uncertainty I'm afraid this does not explain anything. The uncertainty is +/-150. Not +/-200. Rounding to +/-150 would mean ... rounding to 2 * 150 = 300? But why? The value is 350. What's wrong with stating that 350+/-150 is 350+/-150? What do we win by stating that 350+/-150 is 400+/-200? And why round the uncertainty based on ... what? Based on the uncertainty? How does this make sense? Converting 350+/-150 feet to meter results in 106.68+/-45.72 meter. There is neither anything wrong with 350+/-150 feet nor with 106.68+/-45.72 meter. We can think about suppressing irrelevant digits and render this as a value that survives a roundtrip back to the original unit, e.g. 107+/-46 meter. Or rounding to 1% of the uncertainty. But this is not what happens currently. Sure, an output like "106.68 meter" without the uncertainty would indeed introduce "false precision". But even this does not mean we must round this to 100. The error introduced by this is worse than the error by the false precision. We must still round this converted value to something that survives a roundtrip back to the original unit with an acceptable error of about 1%. > we have never [...] tried to make the HTML representation lossless. I'm not sure where this comes from. All string types are rendered in a perfectly lossless format. Identifiers, URLs, Commons media, all lossless. Time values are usually lossless, with rare edge cases. > references to other entities [...] when you copy&paste them, you lose > information. You copy them by right click and copying the id in the URL. TASK DETAIL https://phabricator.wikimedia.org/T95425 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: thiemowmde Cc: Thryduulf, Addshore, Lydia_Pintscher, Jc3s5h, Snipre, mgrabovsky, daniel, thiemowmde, Aklapper, Wikidata-bugs, aude _______________________________________________ Wikidata-bugs mailing list [email protected] https://lists.wikimedia.org/mailman/listinfo/wikidata-bugs
