The communication adage comes to mind here. If the tree in the forest falls, but no one hears it, was there a sound after all? A process, when carried out, creates outputs. There are results. The world has somehow changed.
In some cases, the process may flash across the screen, adding the someone's tacit knowledge, only to then disappear. In some cases, this may be sufficient. Typically, however, something more permanent is in order. We need something explicit.
This may include database records, graphs, charts, and pictures. Documents can thus be created to good ends. Messages may be in good order. Transaction records may be needed. Inventory moves may need to be triggered. Machines may need to be started up. Appointments may be necessary. Test scores may need to be recorded. Diplomas may be granted. The list of possible outcomes is as rich as expressive processes themselves. Though the structure of such outcomes is finite, the possibilities in terms of content are beyond prediction.
Extending expressive processes in this way is an important task. Fortunately, it is not too difficult, an extension of the third generative taxonomy concept.