> The whole idea is to separate the global decisions (which are hard to change) - e.g. architecture, what classes, what each class do, from the local one (e.g.

> The whole idea is to separate the global decisions (which are hard to change) - e.g. architecture, what classes, what each class do, from the local one (e.g. which data structure to use) And this would be one of the reasons why UML is objectively a terrible idea for developing great software efficiently. (I assume it is ok for developing poor software at great cost)