Frank -
That is a sweet thing to share with us. I enjoyed the implications of
it when I first noticed it rendered as a symbol vague or ambiguous
(intentionally or not) as it is. I'm sure hearing it blurted out by a
machine voice just adds another level of fun for me. I helps that he
seemed to add that to his e-mail addy just as I was building a large
circular garden with labarynthine paths in a pattern suggestive of a
biohazard symbol.. This was in honor of my daughter who is a molecular
biologist planning to get married in said garden.
I think the current discussion that Russ provoked (on his way out the
door for vacation?!!) has been a good one in the sense of my own whining
that there was not more actual discussion of Complexity on this list.
Especially auspicious when someone can get Stephen to weigh in so
seriously.
- Steve
On 5/26/17 6:11 PM, Frank Wimberly wrote:
My app that reads emails aloud, as they arrive, says "a new email has
arrived from Glen biohazard". I finally see why.
Frank Wimberly
Phone (505) 670-9918
On May 26, 2017 6:08 PM, "glen ☣" <geprope...@gmail.com
<mailto:geprope...@gmail.com>> wrote:
On 05/26/2017 04:54 PM, Stephen Guerin wrote:
> I am listening to Russ. I do think he's defining a sub-class of
complex
> systems (eg living systems). I would like to keep the definition of
> "complex systems" broader than that though.
OK. But I don't think he's necessarily _asserting_ that only
living systems are complex systems. He's just asking the question
and engaging in a discussion wherein we might be able to refine
his sub-category so that it includes physical systems.
> I understand the subtle distinction your trying to make. I would
say the
> full phase space of a *complex system* has narrow critical
regimes in their
> behavior (phase) space where *complex behavior* is observed as
the control
> parameters are swept through the phase transition. In the
critical regime
> we see complex behavior like sensitivity to initial conditions,
critical
> slowing down, critical fluctuations, power law statistics,
long-range
> correlations, etc. On either side of the phase transition (eg
sub-critical
> and super-critical) regimes, these statistics and behaviors are
not present.
>
> That said, while the critical regime may be narrow in phase
space many of
> these system "self-tune" to the critical point but that's
another thread.
>
> Agreed?
Not quite. If these systems merely contain subsystems capable of
exhibiting complexity, then those 3 you listed are not complex
systems. They are "subsystems capable of exhibiting complexity".
So, no. They are not complex systems in isolation. Russ'
question, I think, targets naturally occurring, whole complex systems.
Now, if we add the experimental apparatus that, eg, maintains a ZB
reaction for a long time, then that _whole_ system can be called a
complex system. But there's significant meat to the controlling
subsystem ... and we biological creatures instantiated it. The
case is the same with, say, glycolysys.
All you need do is identify the circumstances where those three
processes (ferromag, benard cells, BZ reactions) occur in nature
and then we might be able to identify the systems in which they
sit. Then we can test them against whatever predicate we want.
--
☣ glen
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