Norwegian written and pronounced language was actually changed because one digit was added to phone numbers. Here is the long story: Starting after World War Two, the government made an attempt at _merging_ the two written languages. The imagined outcome was named “Samnorsk” (unified Norwegian), led by Språknemnda (The Language committee). The work mainly consisted of changing the grammar of certain words in the bokm…
> This was architected by the head of the telephone bureau in 1949, as an error reduction mechanism I find it fascinating that the telephone bureau was powerful enough to initiate such language change. Imagine happening this today. But this reminds me of the fact that in Czech we have both counting systems as well. The forward (english) counting is the standard, but the backward (german) is quite commonly used inform…
In Sweden we had the "du"-reform where we stopped referring to people either by their title or surname and the plural-you ("ni"). Instead we started using singular you ("du") and first name. This was started at a government agency and spread quickly through society.
There was actually a gender neutral pronoun introduced recently that is getting used more often. In addition to "han" and "hon" (he and she) we now have "hen". Depending on language situation it is actually very handy, and you can actually see it used in large newspapers or semi-official documents.