"Emergence"
Rabbi Jeffrey W. Goldwasser
Kol Nidre 5769
Wednesday, October 8, 2008
There are deep questions that we ask, that we have always asked, about ourselves and our place in the universe. Yom Kippur is a day when we reach inside ourselves to try to answer some of those questions. Who am I? What is the meaning of my life? How do I connect to the universe and its Source?
People generally assume that faith and science have very different answers to those kinds of questions - answers that are fundamentally incompatible with each other. People often assume that each of us must choose to be a person who accepts either the religious answers or the scientific answers. Or, they assume that we must keep the scientific and religious answers in separate compartments of our brains, because the two can never be reconciled.
I know that many Jews think of themselves as rational, modern, scientific people. I do myself. However, many Jews today, despite feelings of attachment to Judaism and the Jewish people, believe that they must reject Jewish religious assumptions about life, creation and God because they believe that those beliefs are incompatible with science and modernity. This is unfortunate. I think that it is possible to discuss our ultimate questions about ourselves and the world both in religious and scientific terms without contradiction.
Both the scientist and the person of faith - and we remember that, sometimes, they are the same person - both tend to be people who are awed by the miracle of the universe. We share a reverence for a world that is more mysterious than we can fully comprehend - from the tiniest creature to the grand scale of the cosmos. Both faith and science are engaged in conversations about our wonder at our own existence.
Tonight, I'd like to talk about one idea that has gained great interest among scientists in several different disciplines, and I'd like to think about what it says about the scientific and religious ways of looking at the world. I'd like, also, to apply that idea to help us come up with some of our own answers to the basic questions about who we are and what our task is in this vast and awesome universe. After you've head what I have to say, I hope that you will consider how science and faith can complement each other, not contradict each other, for people who have open minds and spirits.
To begin, I'd like to start small, on the scale of the tiny. Let's start with ants.
Have you ever looked at ants? Have you ever watched a group of ants long enough to figure out what they were up to? How they are organized? What they do?
When I was eight years old I spent hours staring at the busy ants in the sandy soil of my schoolyard. I was fascinated by the way they would each move in different directions, with no apparent coordination or communication, and yet they could collect food, clear away debris, and build a home for themselves. How do they do that?
Apparently, people have been wondering the same thing about ants for a long time. The Book of Proverbs, which tradition says was written by King Solomon three thousand years ago, gives this advice:
"Lazybones, go look at the ants. Study their ways and become wise.
Without leaders, officers, or rulers, they prepare their stores in the summer, gather their food at harvest time."
Deborah Gordon is a biologist at Stanford University who is, perhaps, the world's leading expert on the behavior of ants. Gordon's studies show that, it seems, King Solomon had the right idea about ants when he said that they have no "leaders, officers or rulers." In fact, according to Gordon, you cannot point to a single ant who is, in any way, the leader of the colony or any part of it.
This often comes as a bit of a surprise to people, like me, who don't know much about insects. Ants have queens, right? Isn't the queen in charge of the other ants? Or are they just figure heads, like the Queen of England?
All of the cultural associations we have with the word "queen" lead us completely in the wrong direction when it comes to ants. Ant queens are not venerated by other ants and they do not in any way issue decrees. Despite what we see in animated movies, queen ants do not live a life of luxury as the matriarch of the ant hill. The queen is just the unique, slightly larger female in each colony who lays the eggs. She is the colony's ovaries, not its leader or its figure head. She just lays eggs.
It seems that all ants - not just the queens - are like this. They each begin life with a genetic and chemical program that determines their body type and directs their behavior. Taken individually, they are remarkably dumb. You can see this when you watch them closely.
One ant will encounter a bit of a twig or the carcass of a dead ant.
That ant will pick it up and follow a program that tells it to carry it north. If another ant comes along who sees the object differently, its programming might tell it to take the object south, and so it does. If the first ant then discovers the object in what it considers to be the wrong place, it will pick it up and carry it back north. Then the second one will come and carry it back south.
Gordon says that they can go back and forth like this for hours ...
sometimes days, weeks or months.
Seen at this level, ant behavior can be infuriating, exhausting, and incomprehensible from a human point of view. We are flummoxed by the way that ants never get tired, never get frustrated, never take pride in a job well done, never stop doing exactly what they are programmed to do, and nothing more. Boredom and discouragement are as alien to ants as mindless, repetitive drudgery is repulsive to us.
However, the fascinating thing about ants, says Gordon, is what we see when we view them collectively. Somehow - and exactly how is the big puzzle - when you look at ants as a whole colony, they are the very opposite of "mindless." When you add up all of the individual "dumb" behaviors of individual ants into a statistically significant pool of many ants, their collective behavior is very smart. Acting together, ants are extraordinary, inventive and capable.
Here is a small sample of what, together, ants can do:
Ants are farmers. Leafcutter ants, for example, create all their food by growing a fungus that they plant, nurture, feed and harvest.
The ants recognize how the fungus reacts to the different types of food they bring to it, and they will stop bringing particular types of food if they notice that it is toxic to their crop. Other ants practice animal husbandry by keeping and caring for aphids, caterpillars and other insects. They milk this livestock for the sweet liquids they produce.
Ants solve complicated mathematical problems. Despite the fact that no individual ant knows anything about geometry or calculus, ant colonies routinely calculate exact mathematical solutions to the practical problems they face. For example, to prevent the spread of disease into the colony, some species of ants will dispose of the bodies of their dead at a location that is exactly the furthest point from all the entrances to their colony.
Ants create amazing works of architecture. Harvester ants respond to changes in barometric pressure by building flood gates at their colony entrances just a few minutes before the rain begins to fall.
Some species of nest-building ants can dig new tunnels starting from two distant, underground locations that meet exactly in the right place in the middle.
So, how do we explain this? How is it possible that creature that are so incompetent, so mindless, so dumb as individuals, can be so capable, so sophisticated, so smart when seen as a colony?
"Go look at the ants. Study their ways and become wise."
Deborah Gordon proposes a model for understanding the way ants are so dumb as individuals, so smart as colonies. The smart behaviors that are entirely invisible - and, it appears, unknowable - when Gordon looks at ants as individuals "emerge" when large numbers of ants are together in a colony. The complexity of the interaction between thousands of individuals with each other and with the colony as a whole result in a system of behaviors that is totally different from anything that a single ant could do alone. Scientists describe that observation, and a host of similar observations from many other disciplines of science, as examples of "emergence."
The term, "emergence," itself is not new. It was first used in the mid-19th century by scientists and philosophers who were perplexed by systems in which novel qualities and behaviors would pop up, seemingly out of nowhere, as a system became more complex. The new qualities were surprising because they did not appear to be related to the qualities or capabilities of the system's individual parts.
The observation of emergence appears to challenge a classical assumption of science that is often called "reductionism." In a reductionist view, all complicated systems can be described as being the sum of the qualities and behaviors of their individual parts. If you understand all the parts of an automobile engine, says reductionism, you can deduce how it makes a car drive on a road. If you wanted the car to fly, you would have to add parts that have the qualities of flight - say a propeller and a wing. You would not expect the car to be able to spontaneously fly just because you added more parts that have nothing to do with flying. Reductionism says that you can always trace the qualities of the whole back to the qualities of the parts.
However, emergence seems to contradict that assumption. You could not look at an individual ant - study it, dissect it, run it through a maze, or do anything to it - that would allow you to deduce some of the complex and sophisticated behaviors of an ant colony.
In an emergent system, some say, reductionism falls apart. New qualities, new behaviors, new abilities appear to "emerge" from the system as a whole. It is not just a matter of "the whole being greater than the sum of its parts" - the whole becomes an entirely different, entirely unpredictable, and entirely new thing from any of the parts.
Some of the most obvious examples of emergence come from biology. It is easy to see how your perception of ants changes as you pay attention to different scales. Up close, they're dumb; from further away, they're smart. Scientists also use emergence to understand non-biological systems. Meteorologists describe weather as a phenomenon that emerges from the complex interactions of air and water molecules, temperature and pressure. Physicists say that the laws of chemistry emerge from more fundamental laws that govern subatomic particles and the forces that drive them.
Emergence also can be used to describe systems that are not usually considered to be in the realm of science. Financial markets, for example, seem to have emergent qualities. Who decides if the stock market will go up or down on any given day? No one. And everyone.
The World Wide Web is another frequently cited example of a system with emergent qualities. Who decides what pops up first when you do a Google search? Nobody at Google, Inc. has the power to decide that. The result of your search is the result of millions of choices made by millions of Web users and millions of interconnections between Web sites.
In both examples, there is no central authority that decides how the system will behave, yet it has a recognizable pattern that emerges out of the chaos of thousands and millions of small parts - you and me. As King Solomon said, there are no "leaders, officers, or rulers."
So far, emergence just seems like an interesting way of looking at how some complex systems work. But, as we think more about it, we can recognize that emergence also has some profound implications for the way we think about the origin of order, pattern and design in the universe. Emergence suggests that there is a kind of mystery to the way the universe's order is created.
In an emergent system, where does organization come from? If there is no master ant, no master water molecule, no master floor trader at the stock exchange, then who is the author of the system of which they are a part? Everyone and no one.
There appears to be some kind of "ghost in the machine." The system itself becomes an entity that is constituted by, and yet separate from, its many parts.
Perhaps there is something about that concept that does not sit well in our minds. There does seem to be something in us that wants to be able to identify the source of the intelligence behind the hidden patterns and rules we observe in the world. We want to know that there is an author. Yet emergence seems to say that our minds'
hunger for an identifiable source or author misleads us. The author of the system is, strangely, neither the system's parts nor the system itself. Rather, it is hidden in the process of myriad interactions among the individual parts, and the parts with the whole.
Who rules the ant colony? There is no puppeteer pulling the strings from the outside. There is no ant or group of ants within it that are responsible, either. Despite the protestations of our reason-seeking minds, we cannot really offer any rational answer to the question.
And, speaking of the mind, our own consciousness appears to be, perhaps, the most mysterious example of emergence of all. When we ask ourselves the question, "Who am I?" What can we answer? Who, exactly, is asking the question? Where, inside of this mass of tissues and sinews, organs and arteries, is the self? Is it here?
Or here? Or here? One possible answer is that the concepts of "self" and "mind" emerged from everything that we are, with no identifiable center or control.
There is no brain cell or group of brain cells that is the master source of our identity. Just as there is no ant that tells other ants what to do, there is no location within you that tells you who you are or that directs your thoughts. Even more, not one of your billions of individual brain cells thinks any thoughts by itself, knows who you are, or understands any of the things you observe with your senses.
Your brain does not work like an army with a general who is in charge and ranks of soldier cells taking orders from superiors. The cells in your brain are much more like a colony of ants - all individually stupid, but collectively miraculous in their intelligence and beauty.
What does that have to do with Judaism? Maybe everything.
Judaism rejects the reductionist view of the universe. There is no Jewish notion that the universe is like a clockwork that, once set in motion, carries out a set of prescribed rules in a way that it is completely regular and completely predictable. In contrast to that view, Judaism assumes that there is mystery built into the operation of the universe and that the universe reveals itself to us in ways that we cannot fully predict or fully comprehend.
Yes, Judaism calls that mystery "God," and that word, many people assume, is what separates faith from science. Science, people think, could never accept the concept of God because God is not subject to proof. But it is not necessarily so. Judaism is not dogmatic in its understanding of God, and "God," in Judaism, is a metaphor that can mean different things for different people. For many modern Jewish thinkers, God is that which makes life and the universe meaningful, not meaningless.
Accepting the teachings of science does not require a person to believe that his or her life is meaningless, and it does not require the rejection of every way of thinking about God. If we look at the ideas of emergence as a guide, it would not be difficult to say that we can think of God as the mysterious author of the system called "the universe," who is neither the system's parts nor the system itself. God is the One who emerges from the process of myriad interactions among the universe's parts, and the parts with the universe.
Here is an example of a classical Jewish metaphor about God and about the mystery built into the universe. An ancient rabbinic midrash says, "There is not a single blade of grass that does not have a guardian in heaven that decrees upon it and says, 'Grow!'" [Genesis Rabbah 10:6]. The rabbis here wanted to convey the idea of a divine presence pervading reality, shaping every moment, supporting and sustaining the world in a way that could never be explained by a purely mechanical process. We acknowledge this in the words of the Amidah prayer which three times a day declares that God's miracles are "every day with us" and that God's "wonders and goodness are in every moment, morning noon and night."
Judaism cannot accept a clockwork universe of strict regular predictability. Yet, neither does Judaism embrace the opposite perspective - a universe that is under the capricious control of a God who is free at any moment to rewrite the rules. God, in Judaism, is not the master puppeteer who controls every aspect of the universe's course. The rabbis were always careful to assert that we human beings have free will that allows us to set our own course - an apparent limitation to God's omnipotence. In the Talmud, Rabbi Hanina deals with this paradox by saying, "Everything is according to the will of heaven, except for humanity's reverence of heaven" [B.
Megilah 25a, B. Niddah 16b].
What does God control? Rabbi Hanina seems to say, "Everything and nothing." As powerful as we might imagine God to be, the rabbis say, God has left human choices between good and bad outside of heaven's jurisdiction. God controls everything, except for our ability to do whatever we want. God - Judaism's author of the system called the universe - is neither entirely present in the universe, nor entirely absent from it.
Emergence speaks in the language of science and Judaism speaks in the language of faith, but both appear to be saying the same thing about the nature of reality. We live in a world that is not simple in its construction, with parts that predictably make up the whole. Rather, we live in a universe that is a constant dynamic tension between the micro and the macro - between the visible world of material reality and the transcendent world of the interconnection that unites all things. Both worlds are real, despite their contradictions and paradoxes.
What is more, the paradox of this complex universe is reflected in our own being at the deepest level. Our very consciousness is, perhaps, the finest example of a universe that is constantly and beautifully revealing novel richness out of the chaos of uncountable interconnections. The emergence of order and beauty out of our cascading neurons is a reflection of the order and beauty of the unfolding and self-revealing design of the cosmos.
How do we answer the question "Who am I?" Both faith and science point to the universe and say that we know ourselves best when we allow ourselves to recognize that we are a part of something much larger and greater than ourselves. We are miracles of systems and patterns that are far beyond our ability to comprehend fully, but we, nonetheless, bring dignity and nobility to our existence by striving to unlock the mysteries. In pursuing such knowledge and awareness, we realize ourselves to be a part of a grandeur and beauty that is transcendent.
The scientist may say that when you look out into the limitless variety of the universe, you can discover yourself. The person of faith may say that when you look deep into yourself, you can discover the face of God. And we can say that they are each, in their own language, saying the same thing.
Perhaps that is our purpose, the reason why we are here. Whether it is to peer into the heavens with a telescope, or to peer into life's difficult choices as they are presented in the Torah, whether it is to study the life of ants, or to study texts that seek life's meaning, our job on this planet is to strive to reveal the hidden, to know the unknown. Through that process, we can come to know ourselves.
Yom Kippur calls on us to reacquaint ourselves with a divine presence that is simultaneously beyond us and deep within us. This is the day that we intentionally try to fathom ourselves well enough to see through all of our conceits and to know ourselves truly for who we are. This is the day when we peer into the universe and strive for a new connection to the ultimate source of life's meaning. We seek out the mysterious author of the universe and the author of our own lives. When we do, we may discover that all is revealed in the myriad ways we are connected to others, to the world around us, and to our own mysterious selves.
The psalmist says, "Shiviti Adonai lenegdi tamid," "I have set Adonai always before me" [Psalms 16:8]. We look into ourselves and we discover that, all along, God and the universe are waiting for us there.
G'mar chatimah tovah. May you be sealed for a good year.
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