In February 2019 I attended the Winter Workshop on Complex Systems in Poland. Together with several others I worked on a project in which we studied whether the spreading of delays through a railway network can be described by a model inspired by diffusion on networks. We applied our modeling approach to the Belgian railways. Now, the paper in which we describe our findings is published in EPJ Data Science. I hope our work will inspire others to look at similar models - there are many more things to explore here!