2015-05-17 Another day of a lot of OSM mapping. Today, I did a whole area of houses plus their addresses. Mapping houses is cool, because you directly *see* the value added afterwards. I finished Clifford Stoll's book ``Die Wueste Internet'' (en: Silicon Snake Oil), which I read in German. On the last page, it contains a puzzle in form of encrypted text. The format of the code already hints to the encryption system used. To decode it, I entered the text into a file and wrote a small awk script to help me solve it (counting frequencies and partly decoding based on the current knowledge). This was fun and brought me fast to the solution. The awk script is about 30 lines long. It is supported by a file containing the decryption knowledge. Currently, I'm un- sure if I want to publish the script (and the solution), because it destroys to the fun to do it yourself. http://marmaro.de/lue/ markus schnalke