Just wondering. I know little about Schelling and was reading a commentary by Forster on his philosophy of nature. Some of the ideas, such as "irritability" and production of the Umwelt recalled terms from Niklas Luhmann's systems theory.
A quick, incomplete glance at some of my Luhmann indexes doesn't find Schelling listed. Is there any explicit influence or connecting lineage here, or just a coincidence of common terms?