*Netting* as a cognitive activity:

> The thingness is not the butterflies-flying-living, rather it is the net, almost invisible. Yet the net (netting as a cognitive activity) the thing that allows the butterflies to be held apart from their Environment – a pre-death kind of isolation.

So let's make a shift from things to interactions.

The Distinction medium/form comes from an idea originally expressed by Fritz Heider.

The Distinction system/environment is the starting point for Luhmann’s systems theory. No system is independent of its environment, since a system is constituted drawing a boundary through its operations and thereby differentiating itself from what does not belong to it, i.e., its Environment.