User talk:Funandtrvl

I notice that you have been changing coordinates "accurate" to many decimal places to quite a few items. Most objects do not need a level of precision greater than half an arcsecond. Anything more is an example of false precision (Q3467464). For example, the difference between 3°17'10.2080"E and 3°17'10.2081"E is about 2 cm. You should also be aware that copying over coordinates from Google has been a concern with participants in the Project Chat, as has the use of the notoriously inaccurate Geographic Names Server (Q1194038). Thanks. Abductive (talk) 02:21, 22 June 2022 (UTC)e[reply]

@abductive:, that's fine, but then please point me to the most accurate way to look up and verify coordinates. If there are no references listed by the current coordinates, where should one verify the information? Are Google maps and Geonet that inaccurate? And compared to what source? --Funandtrvl (talk) 14:09, 22 June 2022 (UTC)[reply]

Sure, first, unless you have reason to believe that an item has the wrong coordinates there should be no reason to change them. (If you look at my contribs here and on the English Wikipedia, you will see that I have added or changed coordinates more than 10,000 locales. These are changes I carefully cross-checked using Google, Bing and OpenStreetMap (Q936).) Google's coordinates are very rarely incorrect, what they are is given in ludicrously long decimal expansion. I suspect that this is done to catch theft of their data. For Google, simply round the coordinates to D°M'S" or D.dddd°. For GEOnet names, just don't use them. Use OSM. Abductive (talk) 14:26, 22 June 2022 (UTC)[reply]

Hello –

This edit to "tourism" (Q49389) was in error. The properties instance of (P31) and subclass of (P279) define key ontological relationships. Because subclass of (P279) is transitive, such errors lead to numerous false inferences (for example, see this tree of parent classes). Before you use these properties, please look at the object item to be sure it's the one you intend. You can also review the usage instructions on these two properties, and Help:Basic membership properties. (In particular, note that "A" is only a subclass of "B" if all instances of "A" are also instances of "B".) There is often another property better suited to expressing the relationship you had in mind; you can search for one here. In this case, studied in (P2579) works better. Thanks! Swpb (talk) 17:17, 18 July 2023 (UTC)[reply]

Hello –

This edit to "University of Notre Dame" (Q178848) was in error. Because subclass of (P279) is transitive (for example, see this tree of parent classes), such errors lead to numerous false inferences, such as University of Notre Dame (Q178848)instance of (P31)action (Q4026292) When using instance of (P31) and subclass of (P279), check the description of the item you use as the statement value, and make sure your use complies with Help:Basic membership properties. (In particular, all instances of a class must be of the same type.) There is often another item that can accurately complete the statement you had in mind; in this case, academic publisher (Q114853062) allows for the accurate statement University of Notre Dame (Q178848)instance of (P31)academic publisher (Q114853062). Thanks! Swpb (talk) 14:36, 31 October 2023 (UTC)[reply]