Earlier this year Pharo 5 was released with QualityAssistant on board. However the live quality feedback in the code browser is just the tip of the iceberg. The main value comes from Renraku — a quality model that was forged during the last two years based on the requirements of quality tools. One cannot simply “show” Renraku as it is just a meta-model with a set of handy functions. And I will never allow myself to bore audience by presenting dry specifications. Luckily I have enough stories that accumulated during the development to unveil Renraku by telling about the challenges and solutions that shaped Pharo’s quality model.