I love the simplicity of BASE's code and how easy it is to demonstrate complex concepts. Some SAS solutions, seeking greater agility precisely on this "agile treadmill" have implemented very useful features in this context: SAS Intelligent Decisioning, for example, has, from version 5.6 onwards, global variables that can be updated by developers/administrators that are immediately reflected in the decision models published , dynamic reference tables that allow you to add/update "key value" to reference for example to versioned APIs for example or allow blue/green treadmill applications. Anyway, very good article and makes us think about how SAS provides such a wide range for all audiences.