Talk:Closed system

message: :The meme complexity of a closed system decreases over time hence intelligence without learning, economics without trade, decisions without input or ecosystems which are cut constricted by industrial development all tend toward lower complexity. 
Please source this comment that complexity necessarily decreases over time in all closed systems. It appears to be easily contradicted. For example, you can consider the human population of the earth to be a closed system.  There are no other inhabited planets (or if there are, they aren't talking to us). Yet human knowledge not only increases, but the very pace of knowledge continues to increase. An isolationist state may have fewer trade opportunities than a state with active connections to other states, yet it can still have a robust and growing economy based on the domestic market. Rossami 23:21, 4 May 2004 (UTC)
thread_title: Some title

message: In the strict sense of "closed" systems, they exist only when they are formal systems because all "real systems" or "systems in nature" are open.
:Thermodynamics was invented to deal with a body of steam enclosed in a cylinder with a piston.Chjoaygame (talk) 00:53, 26 January 2021 (UTC)
thread_title:  closed systems do not exist in nature 

message: I think the following sentence is slightly... vague / non-understandable. I would edit it myself but I can't decide how it was meant - replacing "practicabilities" with "feasibilities" doesn't sound right, although it is a synonym:
"Sometimes the practicabilities of thermal isolation are discussed but never whether thermal isolation is completely achievable in principle."
Seems like it needs rewording. Fresheneesz 03:13, 2 December 2005 (UTC)
thread_title: practicabilities... ?

message: In my opinion, toll roads and closed systems just don't belong to one another.  I think that the notion of a closed system in the context of thermodynamics is so important that it should be contained in its own page and closed system toll roads should occupy another.  S.riccardelli 22:40, 17 February 2007 (UTC)
replies: text: That section should just be moved to the Toll roads page. --George100 10:22, 2 May 2007 (UTC)
replies: text: Moved to Toll_road#Closed_system --George100 07:29, 3 May 2007 (UTC)
thread_title: toll roads?

message: When the hell did closed system start NOT meaning the same as an isolated system? Fresheneesz 21:20, 19 April 2007 (UTC)
replies: text: In thermodynamics "Closed system" has always been different from an "isolated system". Ϙ 18:16, 23 April 2007 (UTC)
thread_title:  WHEN? 

message: In physics, there is actually four, possibly five, different conceptual developments of closed systems concepts. The first began with reference to Newtonian mechanics, the second with nineteenth century thermodynamics, the third throughout the twentieth century with Lorentz, Einstein, and Minkowski, and finally with conceptual developments in quantum theory and wave mechanics. See Heisenberg (1999) Physics and Philosophy, New York:  Prometheus Books, pp. 93-109.  The third and fourth stages eventually led to more open systems concepts, but closed/open system concepts really need be considered in relation to work since that time if one were to define further conceptual developments. --Kenneth M Burke 01:20, 3 August 2007 (UTC)
replies: text: This is a nice story about "the conceptual developments of closed systems concepts" in physics. I copied this text into the Physical system article. - Mdd 18:44, 25 August 2007 (UTC)
thread_title:  Clarifications 

message: :I moved the following comments from the article here. - Mdd 20:22, 24 October 2007 (UTC)
replies: text: Thanks, next time put your comments on a discussion page. - Mdd 20:23, 24 October 2007 (UTC)
thread_title:  Little blog 

message: This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 09:46, 10 November 2007 (UTC)
thread_title:  WikiProject class rating

message: The equation is a pretty straight forward sumation, but b^0=1; no matter what b is.  Is this right?  Is there a reference for this equation to check out.  Thanks, Wolfworks (talk) 02:36, 28 January 2009 (UTC)
thread_title: Equation

message: << A closed system is a system in the "state of being isolated from its surrounding environment." >>
Right at the beginning of the article, this suggests the concept of an isolated system, rather than a closed one. I think it doesn't do much good. 77.209.170.195 (talk) 04:16, 3 February 2010 (UTC)
thread_title:  Misleading first sentence