In Smalltalk, boundary crossing is achieved by sending messages. Note how object Encapsulation provides a distinction that separates the contents of the object from its environment. There is no way to directly interact with the interior of an object’s boundary. Instead, messages must be sent to the object with the tacit understanding that answers will be reasonable.
In order to take a look at our problem from the first distinction, we have to cross the Boundary the first distinction represents in a controlled manner.
Diversity and mobility in Education and work present a paramount challenge that needs better conceptualization in educational theory.