I first heard the intriguing title - Aggregation of Marginal Gains’ while talking to my long term friend Gareth Killa. He was sharing the concept in the office, after hearing the leader of the new ‘The Filling Station - Neath’ Stuart Bell do a short preach on the subject in April 2018. What did it mean ? what was the value of the idea ? how was this implemented ? I personally felt stirred by the concept. When I started to look into the subject I realised this is not new, it’