Do the posts in German really need an indication that they are written in the German language? Just from the title I can immediately see that "Die Metapher der

Do the posts in German really need an indication that they are written in the German language? Just from the title I can immediately see that "Die Metapher der Stadt für das Bauen und Betreiben von Softwareprodukten" is definitely not going to be in English. I assume readers fluent in German don't need to be told that post is in German, the same way I don't need a little UK or US flag to know "March 2018 Book Recommendations" is in English. If you can read the title and introduction you will immediately know which language its written in with no need for flags at all.