Steve,There is no specific reference by Rosen to Spencer-Brown or Laws of Form that I am aware of. As I warn at the top of that resources page:"The links below represent a broad range of ideas. Not all are specifically related to Rosen, and some actually present ideas contrary to Rosennean concepts."I included it in the list primarily because it represents a unique and different formalism that could possibly be utilized for, or inspiring for, modeling. I also have read that Varela used that calculus in his work, but I haven't seen it for myself, so I can't really comment on it either. (I'm trying to get a copy of Principles of Biological Autonomy via inter-library loan.)For myself, I found Laws of Form interesting. I thought it interesting that S-B's logic begins by making a "first distinction". This struck me as interestingly similar to the self/other and system/environment dualisms that Rosen considered in Life Itself as fundamental and necessary for science to proceed. I recall S-B had some comments about time, but its been some time since I read the book.Hmm, maybe relating those remarks on time to Rosen's could make for an interesting paper for Judith's first BioTheory issue regarding time?Regards,Tim-----Original Message-----
From: ROSEN Forum [mailto:***On Behalf Of Steve Johnson
Sent: Sunday, August 29, 2004 8:48 PM
To: ***
Subject: Rosen and the Laws of FormI notice that G. Spencer Brown's Laws of Form is listed on the panmere Rosen site. Did RR ever comment on Laws of Form?I do not claim to understand Laws of Form's philosophical aspects but one connection I could think of is Spencer Brown's claim that Time emerges in his purely formal world (based only on the concept of distiniction) via construction of self-referential statement.I heard that Varela used Laws of Form calculus in something related Autopoesis but I do not know enough about that to comment.- Steve__________________________________________________
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