Saturday, December 29, 2012

Top Links for 2012



Quantum Stuff
Quantum Life - Until Recently it was thought that quantum entanglements could only take place at very low temperatures. New research however suggests they play a role in living systems.
Seth Loyd on Quantum Life
Everywhere in a Flash: The Quantum Physics of Photosynthesis
NOVA | The Fabric of the Cosmos: Quantum Leap



Deep, Beautiful, & Elegant Annual Questions from Edge.org
The Principle of Least Action
Frames of Reference
Falling Into Place: Entropy, Galileo's Frames of Reference, and the Desperate Ingenuity Of Life



Right Brain/Left Brain Asymmetry
Psychiatrist Iain McGilchrist describes the real differences between the left and right halves of the human brain. It's not simply "emotion on the right, reason on the left," but something far more complex and interesting

Iain McGilchrist: The divided brain

Mike Gazzaniga
Recent Interview with Gazzaniga and split brain patient 'Joe'

Marshmellow Studies
The Secret of Self-Control
Reconsidering the Marshmallow Test



Robert Saplosky & Stress
Under Pressure: The Search for a Stress Vaccine
Stress, Neurodegeneration and Individual Differences by Robert Sapolsky

Moving Naturalism Forward
Videos


Change Blindness
Video

 

Uncertainty
SCIENCE IS NOT ABOUT CERTAINTY: A PHILOSOPHY OF PHYSICS
The Buddha, Topoi, And Quantum Gravity

Friday, December 28, 2012

Symmetry Breaking- Phase changes & Moral Progress

"In nature things move violently to their place, and calmly in their place"
— Sir Francis Bacon



Towards the end of the prior session on morality the discussion moved in the direction of finding explanation for the positive historical progression in morality. This discussion was led by Don Ross and carried over into the early section of the next video : Here

Summary of the Discussion

Don Ross discusses how moral dynamics can be modeled by game theory by discussing another example of moral progress. Prior to WWII the tribes of New Guinea each lived in a valley. Every tribe was permanently at war with every other tribe. Individuals from each tribe were unable to move from their valley safely because any contact between members of opposing tribes would result in bloodshed or death. It was however necessary for tribes to venture up the mountain which entailed great risk of coming into contact of other tribes. These were the dynamics of the structural equilibrium that had come to be.

Ross describes how there very well may have been thoughtful individuals questioning whether there could be a better alternative to this seemingly intractable dilemma. When an equilibrium has set in however, no one individual (or 10 individuals) acting out an alternative approach can change the established dynamic. With the onset of WWII, foreign troops infiltrated the island and in the process the previous equilibrium had its symmetry dramatically unsettled. The presence and location of the troops created a constraint on the pattern of violence allowing the tribes people  to more freely access the mountain without fear of slaughter from the competing tribes. This accidental consequence allowed the great majority of the tribes people to experience an alternative to the previous equilibrium and within one generation the tribes of New Guinea were no longer warring with each other.

Prior to the arrival of the invasive elements it would have been far too risky and unproductive for a small minority to change the dynamics. At that stage it is much easier and a more successful survival strategy to rationalize the current state of things. This rationalization likely took the form of adopting moral codes of honor, vengeance, and obviously distrust of those outside the tribe. Once a critical number of inhabitants were exposed to a different way the societal moral codes quickly changed.

My Commentary

The point obviously is not to suggest that war or imperialism leads to positive consequences. I expect that there were also negative consequences for the tribes people as well. The dynamics involved however, in the cultural change are interesting. From a pessimistic point of view this suggests that the symmetry of cultural dynamics in a state of equilibrium can be difficult to break in a bottom-up fashion. From an optimistic point of view however, the adaptive capacity for societal change can be dramatic once the symmetry is broken and a new vantage point can be taken.

This example reminds me of the process that collections of H2O molecules undergo when exposed to different climates. H2O molecules do not have an intrinsic (foundational) state of solid, liquid or gas. Instead the state of the collection of molecules will change phase when extrinsic influences cause the temperature to reach certain critical thresholds. The temperature change is continuous, but at these critical points a symmetry is broken. At this point the change is no longer simply continuous and quantitative, but a instead a qualitative change emerges (see detailed explanation here) such as water from ice.

Minds however are different from collections of H20 molecule in important ways. I would like to believe that a mind has the intrinsic capacity to change it's view. I am suggesting that we can view a single phenomena from multiple perspectives. If we go about our viewing receptively a capacity for creativity emerges. The Taoist philosopher Chaung Tzu put it this way.

When you break something up, you create things.
When you create something, you destroy things.
Material things have no creation or destruction.
Ultimately these concepts connect as one.


If we are receptive to potential alternatives beyond the current norm we may be able to break the symmetry of destructive cycles.  Often it appears as though it takes an event that grabs hold of many minds to create a receptivity to alternatives.

The recent tragic mass shooting of young children may be such an event. There is an increase in the receptivity to changing the gun laws in our country that may be reaching a critical threshold. I am in favor of more regulations (constraints) surrounding this issue. I believe reasonable constraints applied to the process of owning guns has potential to reduce the cycle of violence that is responsible for the majority of gun related homicides. Ironically, the rare tragic events that are changing minds are responsible for a small minority of the homicides and may be less susceptible to prevention. While these tragic mass murders have been increasing in frequency, overall rates have been in decline.



Trends in Weapon Use


While the overall rates have been in decline, they remain at unacceptable and unnecessarily high levels. This is a complex problem that I think needs to be addressed on many levels. I would like to see a collective wave of increased awareness to the issue of our moral foundations. In the prior discussion there was a general consensus agreement that there are no absolute foundational moral values. Steven Weinberg took this further suggesting that this implied that 'we have to live the unexamined life'. Using Hitler as an example he takes the position that vengeance can be an appropriate response, not for the purpose of deterrence, or the protection of society in the future, but simply because 'he is evil'. If we accept that there is no absolute moral foundational code are we restricted to following our intuitions, or is there a way to live an examined life that helps promote well-being among individuals, groups and society as whole?

I believe we can live an examined life that informs our intuitions. We can ask the ourselves the question 'what is being complemented and what is being constrained'. Deterrence of violence due to individual concern of punishment (in some form), and protection from future violence by certain individuals are constraints that may be necessary to improve the general societal well-being. Nature generally shows that interdependent systems that constrain each other are able sustain a progression in complexity. Without these constraints what is left for vengeance? Perhaps vengeance feels as though it can quench an unexamined intuition, but what type of cycle is this likely to encourage. History informs us that unconstrained vengeance will spiral in a destructive fashion.

Vengeance is a common theme driving the violence expressed in gang culture. There also is no shortage of popular movies glorifying the morality of vengeance and rarely do they consider alternatives. Some have pointed to the way culture can shape the expression of mental dysfunction  Punishment may be useful as a deterrent to some degree (constraining violent behavior). In some cases to protect society, those who are unable respond to attempts at rehabilitation may need to have their access to society removed. Vengeance by itself however only feeds the cycle of destruction. As long as vengeance is celebrated as a foundational moral code it will be difficult to break the symmetry of this cycle.

There is an alternative approach. Vengeance with it's capacity for self amplification exemplifies a positive feedback cycle. Positive feedback cycles by their nature are unstable, unsustainable and escalate rapidly in one direction. In contrast negative feedback cycles seek a stable and sustainable balance through a process of complementary constraint. Can we envision a justice system that seeks to enhance individual and societal well-being through well considered constraints? One where the constraints on violent expression leads to a progressive societal stability and each progression of societal stability lessens the need for external constraints?

"The unexamined life is not worth living"
Plato

Wednesday, December 26, 2012

Moving Naturalism Forward - Part 5- Morality

The discussion of the topic of morality was introduced in two parts by Rebecca Goldstein, and Steven Weinberg respectively.

As I have with the other discussions I will try to sumarize the disscussions first and my comments will follow.

The video can be found here:

Goldstien sees the issue of whether or not we can 'ground' morality as a non-issue. She indicates we have been doing it, there is a 'forward movement' and philosophy in her view has played an important role in that progress. Richard Dawkins and others will later chime in showing agreement with a collective historical progression of morality. As an example of the forward movement of morality Dawkins points out that T.H. Huxley, who was extremely progressive considering 19th century norms would have never even considered that black people could be intellectually comparable to white people, Goldstein decribes how we look back with 'horror' on the accepted morality in even the quite recent past. She reccounts how a person in the room admitted that as a young man he took it as a given that women could not do math and physics. Jenna Levin then smart quips 'which one of you said that'? So the session gets off to a good natured start as the response is laughter.

Goldstein continues, suggesting that our grandchildren will look back on some our current actions with the same horror. She points out that once progress is made we almost never go back. Using slavery as an example there was one reversal with Napoleon for a short time. She says historically, 1st philosophers point out a moral problem, then there is something that effects a larger public awareness. In case of slavery she points to Lockes argument against slavery which preceded the novel 'Uncle Toms Cabin' which had a huge effect. 'There is a place for reason here'.

Goldstein says she is interested in the work of evolutionary psychology and Johnathan Haidt, although she strongly disagrees with his conclusions. Evolutionary psychology can help inform why we hold some of the moral intuitions we do, but reason is necessary to consider if we ought to hold them. The response of disgust which probably evolved in response to things like food borne pathogens is used as an example. Out of that intuitive response the morality of purity was probably born. Goldstein herself was brought up to moralize around foods and initialy had a 'moral revulsion' to lard. Reason however has allowed her to see the irrationality of that response. She also cites group loyalty, and authority as examples. One defining point is that 'moral psychology without moral philosophy is insufficient'. Her second point is that we can ground our morality in the fact that we matter. From that place moral reasoning can expand (to others).

Steven Weinberg agrees we can reason about morality, but we cannot 'ground' morality in reason or science. There are no absolute moral postulates. Weinberg is arguing against the case made by Sam Harris that moral postulates can be grounded in science. He also argues that even nice people lack coherent moral postulates, by using himself as an example. In highschool Weinberg held a utilitarian stance (the greatest happyness, for the most people). He then read 'Brave New World' in which a world was portayed where every one was happy, but there was no justice, no culture, no search for meaning. This led him to see shortcomings in the utilitarian posture. Other examples include his loyalty to his family, and his moral feelings relating to evil and vengence. Vengence is not problematic to Weinberg in that he believes evil should be punished for its own sake above and beyond the value gained from deterence or societal protection. Weinberg sees 'no algorythm' for balancing things like 'happyness and truth', 'loyalty and distributive justice'. At one point he concludes that this is not a problem, 'so what, thats OK'. He also concludes however, that 'we have to live the unexamined life', and 'this is part of the tragedy of the human condition'. It seems Weinberg feels we cannot reason our way to moral philosophy because there are no absolute moral postulates. Goldstein agrees there are no absolute postulates, but that does not imply that reason can not play an important role for reason in the unfolding of morality.

Massimo Pigliucci agrees with Weinberg with regard to the limits of utilitarianism and his criticism of Sam Harris's position. He points out that there are ethical frameworks (virtue ethics, communitarianism) that address the family loyalty dilemma. He states that moral reasoning in philosophy is not hinged to grounding morality on a bedrock or to providing universal answers. It is instead a way of thinking things through. In ethics we do have to start with some assumptions or axioms, but this true for everything we do (science, math, logic). Pigliucci reccomends the books of Michael Sandel as a useful example of how to reason in this way. He also cites Peter Singers 'Exanding Circle' as an approach to the problem of our distrust for others. Weinberg is unconvinced, and unable to see how a rational process can inform his core moral feelings. Dan Dennet points out that not all rational processes are 'fact finding processes'.

Don Ross points out how the process that informs our moral values is extemely complex at multiple levels, yet we are pretty good at it. Ross highlights an interesting personal example of dramatic moral progress. When he was a child his parents held the view that gay people were on a level with criminals. They held the belief that gays should not be allowed to participate in society. His parents who are still living now hold a typical liberal view and have gay freinds. He feels this was a very gradual process 'there was no magic line crossed' Due largely to a societal process in which we all are continuosly indoctrinating each other change took hold. Goldstein makes an important point that I felt she had skimmed over before. In addition to the top-down societal pressure that Ross describes a bottom-up spark for change often comes from those who are being wronged through their organizing and advocating for justice. She notes that (other) animals can't do this.

Owen Flanagan then brings two import ideas together that provide insight to the discussion that has been ongoing. The first idea is that of an absolute foundational approach to morality, which he points out most naturalists are trying to avoid. The second idea relates to how science can inform moral philosophy. Hume, as Flanagan points out, famously declared 'we cant demonstrate moral facts'. The is known is the naturalistic fallacy, 'is does not imply ought'. Flanagan shows that Hume made this declaration in response to moral clerics who were advocating foundational morality. Hume then continues with 200 pages of moral philosophy, but not with the goal of demonstrating anything in a foundational sense. Flanagan suggests that while it is not logical to think we can derive moral facts from science, we can us science to becomed more informed regarding our nature. The better we are informed regarding our nature the better we can negotiate with each other. Pigliucci agrees pointing out that Hume felt morality was grounded in human nature, and Pigliucci adds that human nature itself is contantly evolving. He points out that Hume recognized that human nature evolves through culture well before the time Darwin.

Terrence Deacon breifly brings the discussion back to the topic of the prior day. He points out that just about everything being discussed could fall under the category of emergence. David Poepple points out in response that 'fermions don't make moral judgements, people do'. He is puzzled by the discontinuity between talking about individual psychology and moral group dynamics. Sean Carroll points out that we can study naturalistically what people do (through psychology), but that does not determine what they should do. We are back to 'is vs ought again'.

This for me has been another intersting and informative discussion. I think there was considerably more agreement then disagreement among the participants. All participants seem to agree that moral values have been  progressing in a positive direction historically. All the participants also seem to believe that there are no absolute moral postulates and therefore it is not productive to go about moralizing in that way. I even think that think all participants agree that reason and science play some role in the agreed upon progression of moral values. I think the primary place where Steven Weinberg clearly disagrees with most others in the room is in regard to the ability of individuals to influence thier own core moral values through reason. This one initial difference however, leads to what I see as an important limiting condition with regard to the philisophical stance that 'we have to live the unexamined life'. People can agree for the most part on what they are looking at, but depending on the frame of reference what is subjectively viewed can seem quite different.

Most appeared to agree that it is important to examine our assumtions, axioms, and biases when balancing the way we think about moral values. This is what I would like to see explored in more depth. I think we can make efficient moral progress if we go about the art of living with this in mind. I also think the concept of complentarity can be very useful in this process. If our assumptions lack a full conception of the dynamics involving the complentary and oppositional ideas present in a given problem then our moral stance will be incompletely informed and biased in some way. In my view bias will always be present to some degree. I feel strongly that we can cultivate a way of living that increases our awareness and reduces our bias.

I am now going to give some examples of how I might apply this concept drawing in part from Terrence Deacons presentation on emergence.

In the simple molecular model Deacon described a system comprised of two sub-processes that complemented each other through their opposition. He describes the complementary opposition as each process constraining the other. The creative process of autocatalysis is constrained by the shell formed from the self assembly process. The self assembly is dependent on (and thus constrained by) what is produced. Together the sub-processes forms a whole and each sub-process 'matters' to the other. This forms a nice metaphor for the 'mattering' which Goldstein refers to as her ground for moral values.

The whole of this simple model however will need further constraints to become a living system. The shell for example will need a degree of permeability to allow energy from the outside to keep it's systems working. The whole of the simple system needs to communicate, and in a sense cooperate with it's environment. In more complex living organisms the organism depends on its cells for life, and the cells depend on the organism to provide ongoing sources of energy. Now we have a very early stage metaphor for selfishness and altruism. Orgnanisms tend to survive natural selection when thier cells are not too greedy or invasive, but instead are constrained to benefit from a balance that allows the organism to flourish. While most relationships between species in nature are symbiotic, some are parasitic. In either case I think the metaphors are informative and useful, but we need to remember that every moral problem is unique. Once again is does not imply ought.

We should not be surprised that human nature expresses itself with both selfish and altruistic traits. According  to the taoist concept of complementarity the exisitence of one requires the other. The question then is not whether human nature is intrinsicly selfish or altruistic. The better question which our conscious process affords  is, 'how can we balance these traits so that they complement each other'?

There is no foundational answer to that question. The value we give each answer will depend on the contextual details of the problem at hand, and the reference frame in which we view it.  So then another series of  important questions appear;  'What are my assumptions', 'How might my frame of reference be biased', 'How might I complement my reference frame to constrain its bias? It is very difficult to see the bias in our reference frame as it is the lens though which we look. With that as a given I think it is best to make use of all of our tools; our reason, our science, and our introspection with a receptivity to the idea that there will always be a 'missing complement' waiting to be discovered. From my frame of reference that is not a 'tradgedy', but a simultaneously practical and elegant path toward progress.

Edit: The discussion on morality continues into the next video

Don Ross presents a very interesting real world example pertaining to the issue of vengence. I will at some point describe that in another post and than continue to address some of the examples of moral problems brought up in the discussion.

Update:

Here is a nice link on some eastern meditative approaches or practices intended to improve our tools for ethical behavior.
Practical Ethics

Tuesday, December 25, 2012

Moving Naturalism Forward - Part 4- Emergence(2)

I am creating a place holder here as I plan to post on the 2nd video  from the conference on the topic of emergence at a later date.

The video can be found Here

Monday, December 24, 2012

Moving Naturalism Forward - Part 3- Emergence

Emergent phenomena are often defined in one of three ways:

1) if the behavior of a phenomena is not simply the sum of it's reducible parts
2) if the behavior of a phenomena is not predictable given full knowledge of it's parts
3) if the behavior of a phenomena exhibits novel causal efficacy not exhibited by it's parts

For those looking for more background on the topic, the philosopher Massimo Pigliucci presented a four part commentary on some important papers in the field at these 4 links: part 1, part 2, part 3, part 4

The discussion at the 'Moving Naturalism Forward ' conference that I will now summarize was introduced by Terrence Deacon and can be found here.

I found Deacons approach to the topic very compelling.  I would recommend anyone interested in the topic to check out the first 2 to 25 minutes of the video where his approach is spelled out.

Deacon begins by addressing the question 'What fits in naturalism'? Deacon feels that Rosenberg's approach and that of most naturalists in general is overly eliminative. In particular Deacon would like find a place for teleology ('organisms have an end-directedness') in biology. While most in the room would consider Deacon to be an anti-reductionist he considers what he does to make full use of reduction. He feels however that meaning has causal efficacy in the world, and that we need to think in terms of 'processes and dynamical complexities' to begin to address how this may come to be.

Deacon does not feel that talk of bottom-up and top-down causality is useful. He feels that the organization of the structural dynamics is what really matters. 'The work' he states 'is mostly done by constraints' on structural relationships. The constraints determine 'what does happen, not just what could happen'.  In Deacons view the causality in the world  is not in the 'stuff', but in the 'organization'.

Don Ross suggests that Deacon talk scales rather than levels which Deacon is fine with. Steven Weinberg however, is adamant that the language of  levels is retained. He as a particle physicist feels there is a 'fundamental level of truth which determines every thing at higher levels'. Ross is on board with getting away from the top-down, bottom-up trap in compositional terms. He would like to employ scales in relation to how universal a theory is. In this way he sees quantum field theory as universal. Using Deacons terminology quantum field theory would constrain other theories.  I agree and my reading of this is that complementarity would be perhaps the general universal principal that applies to all scales of emergence. Deacon provides a slightly less general, but more explanatory model that incorporates a type of complementary interdependence.

Deacon is very interested in the origin of life and approaches emergence from that vantage point. The origin of life had to in his view be relatively simple, but yet it represents a dramatic 'phase change'. This is where the very beginnings of end-directness emerge. Deacon feels we can tell this story by looking at information, thermodynamics, and organization. Within these 3 areas he sees his conception of 'constraint' as a common thread.

Life has to generate regularity, and also has keep that regularity from dissipation. To do this it has to constrain the thermodynamic tendency towards dissipation. The organization must be limited in certain ways. Deacon then describes a molecular model in which interdependent self organizing systems generate constraints (boundary conditions) on each other. The constraints can then be remembered as information and passed on.

Deacon decsribes two relatively simple molecular processes, an auto-catalytic system, and a system of self assembly. Together their produce a capacity for self-repair. Auto-catalysis is a generative process of local asymmetry, but this process will dissipate (due to the 2nd law) if not somehow contained.  The self-assembly process can build shells (or membranes). The self-assembly of a shell is dependent on a local asymmetry of molecules (that is it's constraint. The auto-catalytic process is dependent on some type of physical containment to persist (thus the shell produced through the process of self-assembly serves as it's constraint). In effect the resulting system composed of these two process is able to maintain itself because each produces constraints the other needs. The sub-processes are complementary and inter-dependent.

The type of emergence Deacon has just described fits under the 3rd category bulleted at the top of this post. A novel property (persistence through self-repair) has emerged. One could imagine this theory of complementary and inter-dependent process nesting forward in complex loops until the constraints in the form of information become retained in a stable form like DNA. As each new loop of added inter-connected complexity unfolds a new type of causality emerges into the world. Eventually organisms with nervous systems emerge, and finally those with minimal the higher degrees of sentience.

I think this is a beautiful theory. It is reductive in the sense that its process is simple (perhaps even fundamental), yet the theory can in principle be applied efficiently across many progressions of emergence. Where along this chain, function, meaning, consciousness and purpose emerge are exceedingly difficult questions not soon to be answered in any definitive way. Yet I think this principle of complementary inter-dependent constraints (my phrase) points to a fruitful direction to explore. I also feel it has utility in the mean-time both as a guide for introspection and scientific hypotheses. As Deacon puts it 'life is constantly in the process of changing its own boundary conditions' to me this suggests freedom has evolved through it's dependence on constraint.

While Deacon was heavily influenced by Charles Peirce, it should be evident that his approach aligns nicely with the insights of eastern thought that have been around for over 2,500 years. In his book Incomplete Nature: How Mind Emerged from Matter Deacon begins with a reference to chapter 11 of the tao te ching which speaks to the utility of emptiness.

Back to the video, Dan Dennett voices agreement with the thrust of Deacons approach, Rosenberg unsuprisingly is not. There is a strong hesitancy within the group to let go of the conception of fundamental levels as it applies to 'stuff'. The most vocal is Weinberg. The thrurst of his argument is that while fermions and bosons are not an efficient (or in most even cases possible) means to understand higher level properties, they are still fundamental because they 'entail' the higher level properties (in principle).

Pigliucci asks Weinberg what it is that justifies that belief. Weinberg a Nobel prize winner appeals to historical successes in physics and cites phase transitions. Through statistical dynamics approximations of thermodynamics can be obtained from the level of fundamental particles. Those approximations however, rely on boundary conditions (like temperature and pressure I think) which are properties of the higher level. This is pointed out by Pigliucci at about the 52 minute mark of the video, There is consensus that all higher level phenomena are compatible with the sub-atomic level but disagreement about whether 'entailment' should be implied. I believe this is the trap (bottom-up determinism) that Deacon is attempting to avoid.

Weinberg knows more about fundamental physics than perhaps anyone in the room (Carrol and Levin are also experts), and far more then I could ever hope to know. By listening to the discussion however, I am brought back to Rebecca Goldsteins introductory comments regarding our 'core intuitions'. They are extremely hard to move and maybe especially so for experts. Of course Deacons approach is very much in line with my 'core intuitions' so it is easy for me to find value there, and potentially to miss the value in something Weinberg is advocating.

I think this argument is very important with regard to the future direction of science and if time avails I recommend listening to the entire video.