This is very important to coordinate systems used to map the height of the ground, because the idea of quantified ‘height’ implies that there is a level surface somewhere below us which has zero height. Even statements about relative height imply extended level surfaces. When we casually say ‘Point A is higher than point B’, what we really mean is ‘The level surface passing through point A, if extended, would pass above point B’ So to accurately quantify the height difference between A and B, we would need to know the shape of the level surface passing through point A. In fact we choose a general ‘reference level surface’ of zero height covering the whole country to which we can refer all our measured heights. This reference level surface is not flat!
On 24 January 1918 Lenin signed a decree that moved the brand-new Soviet Union from the Julian to the Gregorian calendar. In order to bridge the 14-day gap between Julian and Gregorian, 1-13 February 1918 were omitted, so that 31 January was directly followed by 14 February.
In “I scanned %g directories”, you’d expect “directories” to be in the accusative case (since it is the direct object in the sentnce) and the plural number, except where $directory_count is 1, then you’d expect the singular, of course. Just like Latin or German. But! Where $directory_count % 10 is 1 (“%” for modulo, remember), assuming $directory count is an integer, and except where $directory_count % 100 is 11, “directories” is forced to become grammatically singular, which means it gets the ending for the accusative singular.
People whose names break my system are weird outliers. They should have had solid, acceptable names, like 田中太郎.