I would posit that, the more specific the rules of a system, the fewer behaviours can be expressed by it. When a language restricts the usage of things by the

I would posit that, the more specific the rules of a system, the fewer behaviours can be expressed by it. When a language restricts the usage of things by the type of thing being used, it restricts the set if behaviours that can be expressed in that language. You can get around this by adding more rules to specify the behaviours needed. (Boilerplate?) In this way, a dynamic language permits more behaviours with less rules. It is more “expressive”. This can be good and bad, some of those behaviours are probably unwanted! And this is just a theory.