Nanuq Posted February 25, 2009 Report Share Posted February 25, 2009 From the mother of Chuck Norris... --"Get back to the basics. Simplify your life. Live within your means. People have got to be willing to downsize and be OK with it. We must quit borrowing and cut spending. Be grateful for what you have, especially your health and loved ones. Be content with what you have, and remember the stuff will never make you happy. Never. Back then, we didn't have one-hundredth of what people do today, and yet we seemed happier than most today, even during the Great Depression. --"Be humble and willing to work. Back then, any work was good work. We picked cotton, picked up cans, scrap metal, whatever it took to get by. Where's that work ethic today? If someone's not being paid $10 an hour today, they're whining and unwilling to work, even if they don't have a job. The message from yesteryear is don't be too proud to do whatever it takes to meet the financial needs of your family. --"Be rich in love. We didn't have much. In fact, we had nothing at all, compared to people today, but we had each other. We were poor, but rich in love. We've lost the value of family and friends today, and we've got to gain it back if we're ever to get back on track. If we lose all our stuff and still have one another and our health, what have we really lost? --"Be a part of a community. Today people are much more alone, much more isolated. We used to be close with our neighbors. If one person had a bigger or better garden or orchard, they shared the vegetables and fruits with others in need. Society has shifted from caring for one another to being dependent upon government aid and welfare. That is why so many today trust in government to deliver them. They've forgotten an America that used to rally around one another in smaller clusters, called neighborhoods and communities. We must rekindle those local communal fires and relearn the power of that age-old commandment, 'Love thy neighbor.' --"Help someone else. We never quit helping others back then. Today too many people are consumed with their own problems and only helping themselves. 'What's in it for me?' is the question most are asking. But back then, it was, 'What can I do to help my neighbor, too?' I love Rick Warren's book 'The Purpose Driven Life,' and especially his thought, 'We were created for community, designed to be a blessing to others.' Most of all, helping others gets our minds off of our problems and puts things into better perspective. --"Lean upon God for help and strength. We didn't just have each other to lean on, but we had God, too. We all attended church and belonged to a faith community. Church was the hub of society, the community core and rallying point. Today people turn to government the way we used to turn to churches. It's been that way ever since Herbert Hoover's alleged promise of a 'chicken in every pot' and President Roosevelt's New Deal. Too many have abandoned faith and community. We trust in money more than God. And maybe that's a reason why we're in this economic pickle." Link to comment Share on other sites More sharing options...
jonthebhoy Posted February 25, 2009 Report Share Posted February 25, 2009 Jeez......you made it a tough one this time Bob, however I found advice from a Norris as well. Prof. J.P. Norris to be precise:- "Let me describe in a little more detail my interest in coagulation. In diverse contexts one is led to consider a large system of particles (bubbles, droplets, stars, molecules...) which, over time, stick together to form larger particles. This can be modelled as a Markov random process. The challenge is to discover the possible sorts of behaviour of these systems: is there a non-random approximation giving the evolving concentrations of particles of various masses, do most of the particles eventually (or instantaneously) stick together, do spatial fluctuations matter, does the mass distribution, suitably renormalised, converge in long time? These are questions of interest to scientists in many fields but a rigorous mathematical theory has only partly emerged. Techniques relevant to the analysis of these processes are martingales, weak convergence, coupling of processes and plenty of careful estimates." Okay who's next? JTB Link to comment Share on other sites More sharing options...
Nanuq Posted February 25, 2009 Author Report Share Posted February 25, 2009 Bah, and pffffft! If that hypothesis were true, there would be no agglutination of mass to form suns and planets after the Big Bang. Gong! A dynamic system is created when conflicting forces of various kinds interact, then resolve into some kind of partly stable, partly unstable, equilibrium. The relationships between these forces and substances create a range of possible states that the system can be in. This set of possibilities is called the state space of the system. The dimensions of the state space are the variables of the system. Every newspaper contains graphs which plot the relationship between two variables, such as inflation and unemployment, or wages and price increases, or crop yield and rainfall etc. A graph of this sort is a representation of a set of points in a two-dimensional space. Newspapers and journals will also sometimes contain graphs which add a third variable, and thus represents a three-dimensional space, using the tricks of perspective drawing. The state space of the sort of dynamic system studied by cognitive scientists will have many more dimensions than this, each of which measures variations in a different biologically and/or cognitively relevant variable: Air pressure, temperature, concentration of a certain chemical, even (surprise!) a position in physical space. But the mathematics is the same regardless of how many variables the space contains, or the physical or biological process that each dimension is tracking. However, although these variables define the range of possibilities for the system, only a few of these possibilities actually occur. To study a dynamic system is to look for mathematically describable patterns in the way the values of the variables change and fluctuate within the borders of its state space. The patterns that a system tends to settle into are called attractors, basins of attraction, or invariant sets. In Port and Van Gelder 1995, an invariant set is defined as "a subset of the state space that contains the whole orbit of each of its points. Often one restricts attention to a given invariant set, such as an attractor, and considers that to be a dynamical system in its own right." In other words, an invariant set is not just any set of points within the state space of the system. When several interrelated variables fluctuate in a predictable and law-like way, the point that describes the relationship between those variables travels through state space in a path which is called an orbit. The set of points which contains that orbit is called an invariant set because the variations in that part of the system repeat themselves within a permanent set of boundaries. Port and Van Gelder define "attractor" as " the regions of the state space of a dynamical system toward which trajectories tend as time passes. As long as the parameters are unchanged, if the system passes close enough to the attractor, then it will never leave that region." The simplest example of an attractor is an attractor point, such as the lowest point in the middle of a pendulum swing. The flow of this simple dynamic system is continually drawn to this central attractor point, and after a time period determined by a variety of factors (the force of the push, the length of the string, the friction of the air etc.) eventually settles there. A slightly more complex system would settle into not just an attractor point but an attractor basin. i.e. a set of points that describes a region of that space. The reason that these attractors are called basins of attraction is because the system "settles" into one of these patterns as its parameters shift, not unlike the way a rolling ball will settle into a basin on a shifting irregular surface. A soap bubble is the result of a single fairly stable attractor basin, caused by the interaction of the surface tension of the soap molecules with the pressure of the air on its inside and outside. Because a spherical shape has the smallest surface area for a given volume, uniform pressure on all sides makes the bubble spherical. But when the air pressure around the soap bubble changes, e.g. when the wind blows, the shape of the bubble also changes. The bubble then becomes a simple easily visible dynamic system of a sort, marking out a region in space that changes as the tensions that define its boundaries change. To see how these same principles can eventually reach a level of complexity that makes them a plausible embodiment of thought and consciousness, imagine the following developments. 1) The soap bubble could get caught up in an air current that flows regularly so that, even though the soap bubble is not staying the same shape, it changes shape in a repeating pattern. As I mentioned earlier, this pattern is often called an orbit, because the trajectory that describes this repeating change forms something like a loop traveling through the state space of the system. Systems that settle into orbits are usually more complicated than those which settle only into attractor basins which are temporally static, particularly when those orbits follow patterns that are more complicated than mere loops. 2) Instead of having the soap bubble fluctuate in three dimensional space, imagine that it is fluctuating in a multi-dimensional computational state space. As I mentioned earlier, state space is not limited to the three dimensions of physical space, for it can have a separate dimension for every changeable parameter in the system. The most popular example in cognitive science of a system that operates within a multi-dimensional state space is a connectionist neural network. Connectionist nets consist of arrays of neurons, and each neuron in a given array has a different input or output voltage. Each of those voltages is seen as a point along a dimension of a Cartesian coordinate system, so that an array of ten neurons, for example, would describe a ten-dimensional space. But in other kinds of dynamic systems analyses, any variable parameter can be a dimension in a Cartesian computational space. Our friend the soap bubble can be interpreted as a visual representation of the air pressure coming from every possible angle within the three dimensions in physical space, if all other background conditions remain stable. And when the various interacting forces and variables in a dynamic system are designated as dimensions in a multi-dimensional space, it becomes possible to predict and describe the relationships between different attractor basins in that system. This is the most relevant disanalogy between a soap bubble and the more complicated dynamic systems studied by cognitive scientists. Because: 3) A soap bubble has really only one stable attractor basin. Although the attractor space that produces a soap bubble is fairly flexible, the bubble pops and dissolves if too much pressure is put on it from any one side. But in certain systems, there are fluctuations of the variables which can cause the system to settle into a completely different attractor space. These systems thus consist of several different basins of attraction, which are connected to each other by means of what are called bifurcations. This makes it possible for the system to change from one attractor basin to another by varying one parameter or group of parameters, and thus initiate a different complex pattern of behavior in response to that change. This propensity to bifurcate between different attractor basins is what differentiates relatively stable systems (like soap bubbles) from unstable systems (like living organisms or ecosystems). In this sense, all living systems are unstable, because they don’t settle into an equilibrium state that isolates them from their surroundings. Organisms are constantly taking in food, breathing in air, and excreting waste products back into the environment they are interacting with. We usually think of unstable processes as formless and incomprehensible, but this is often not the case. Certain unstable systems have a tendency to settle into patterns which still fluctuate, but fluctuate within parameters that are comprehensible enough to produce an illusion of concreteness. When the various forces that constitute the processes shift in interactive tension with each other, a basin of attraction destabilizes in a way that makes the system bifurcate i.e. shift to another basin of attraction. This kind of system is sometimes called multi-stable, because its changes between various basins of attraction are predictable and (to some degree) comprehensible. A complete pictorial graph of a dynamic system of this sort would resemble figure 4. It would show interlocking computational spaces whose transitions were governed by the relationships between the constituting forces of the system. This process of bifurcation bears a significant resemblance to the switching between possible branches of decision trees which is the fundamental cognitive process performed by computer languages. And this kind of decision-making is an essential part of many extra-cranial aspects of skillful sensory motor activity, a fact which plays havoc with Descartes' distinction between the so-called automatic functions of the body and the rational decision making of the mind. Link to comment Share on other sites More sharing options...
Demsey Posted February 25, 2009 Report Share Posted February 25, 2009 I like pie. Link to comment Share on other sites More sharing options...
jonthebhoy Posted February 26, 2009 Report Share Posted February 26, 2009 I like pie. +3.141952 Link to comment Share on other sites More sharing options...
omni Posted February 26, 2009 Report Share Posted February 26, 2009 Jeez......you made it a tough one this time BobNot so tough at all Johntheboy. REBUTTAL: My childhood was in the 50's where some of Mama Norris' advice and recollections still applied, I understand things were significantly simpler, but we will never get back to those simpler times as the information age has us more connected in so many more complicated ways. If a cosmic calamity like a meteor strike has us all living in caves, yeah then we will get back to those simpler times. I like the recent movie "He's Just Not That Into You" as a primer of how in today's society it has so many ways that (text-cell-computer-etc.) you have to communicate one-on-one and how everything requires your attention in order not to get "lost in translation." As a new WWII refugee immigrant family, the living was by far skimpy at best with wants vs. needs, food vs. "things". Since then of course, attitudes changed, society changed, situations changed, economic engines changed, adaptation for us was really the best means of survival since we were forced into it just by having to be uprooted and switching countries. We can all reminisce about how society has gotten away from the "good 'ol day" core values that seemed better, simpler and easier dealing with adversity, but its a new era that requires new skills, new methods, a new society, and new attitudes to deal with it all. Race or religion wasn't an issue back in Mama Norris' time, everyone was separate, being in church it was easier to help your fellow kind, since your neighborhood was people like you, your church like you, your friends like you, all thinking like you, "not foreign." With movement of people from their enclave neighborhoods to follow jobs that were once congealed in their home territory, it changed the face of society forever and there is no going back. Now we're homogenized worldwide, interracial mixing a norm, and its a global society and economy where we effect other parts of the globe. We are evolving socially for better or for worse and no matter how much "whine goes with the cheese", everyone must adapt to the new scenario to survive, just like my family did coming to America in the late '40s. A society that stops listening to the wisdom of their elders is only doomed to repeat history, I listen and appreciate my elders, even at my 60+ aging, but I also filter out the complaining about the loss of a more refined elegant social order of the past. I've got no issue with the way things are today, they are what they are, get used to it. If I get upset about the neighbor's kids being so noisy, I don't forget today that I was once that noisy neighbor kid of yesterday. The ones that can adapt with the wisdom taken from the past will survive, all the others will just whine about how things used to be. Getting back to the basics is a moot point, we just have more basics to deal with today. Remember when only the man worked and the woman stayed home, that's a thing of the past and part of the change in society, not the destruction of it. We all do what we gotta do to survive in a new world. I also like pie, especially homemade apple divided evenly by physics, but after 2 bloody Marys since 3 in the afternoon its time to move on to more serious vodka martinis. I don't have a drinking problem, "I drink, I fall down, no problem!" ........... and a Obamaism "God Bless Us All." Link to comment Share on other sites More sharing options...
Nanuq Posted February 26, 2009 Author Report Share Posted February 26, 2009 Drinking problem? What drinking problem?? Link to comment Share on other sites More sharing options...
omni Posted February 26, 2009 Report Share Posted February 26, 2009 Yeah Bob, in a linking way (in the spirit of 6 degrees of Kevin Bacon) I know all about Homer from friends, too many tourist fishermen according to one old Cali buddy of mine who escaped and lived there for 25 years. He had enough finally and moved to Ecuador. Now he lives in the land of too many ex-pat gringo retirees. Drinking problem? What drinking problem?? Link to comment Share on other sites More sharing options...
Nanuq Posted February 26, 2009 Author Report Share Posted February 26, 2009 Given the single digit temps this month, that sort of gives a different meaning to "6 degrees of freedom" eh? Alaska... where you can live on a beached derelict on a sand spit, and scoff at the economy. Ah, freedom. Link to comment Share on other sites More sharing options...
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