Its good to see all those "why is X in Y?" type comments. Remember that feeling when deploying algorithms, especially when those affect people (which hopefully

Its good to see all those "why is X in Y?" type comments. Remember that feeling when deploying algorithms, especially when those affect people (which hopefully in not the case with this nice project. A mechanism to explain how specific results came about is as much part of the project as the more technical machine learning choices involved.