After long discussions on how to improve the transferability and reproducibility of complex simulation protocols, the predecessor of pyiron - pyCMW was born in 2011. pyCMW stands for python based computational material science workbench and was originally an airport project of Joerg Neugebauer, meaning he worked on it when ever he was stuck at an airport. It combines a PyQT based file browser and code editor, HDF5 based data storage and a PostgreSQL database to index the individual calculations. Given the time constraints pyCMW was a prototype for a long time until Ugur Aydin joined the development. He was the first PhD student to apply pyCMW to study “Interstitial solution enthalpies derived from first-principles”. We congratulate him to the successful defence of his thesis and wish him all the best for his future career.