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Saturday, January 1, 2000

Evolutionary Ethics

Evolutionary Ethics (Part I)

The idea that our moral sense is a product of human evolution has been around ever since Darwin, but in all those years it has never managed to convince most philosophers that it's plausible. Marc Hauser at Edge takes another stab at it in an article titled Biology (Not Religion) Equals Morality. There's much to think about (and to criticize) in his essay so I'd like to offer an analysis over the next several days. This post will be part I of the series.

Hauser writes:

For many, living a moral life is synonymous with living a religious life. Just as educated students of mathematics, chemistry and politics know that 1=1, water=H2O, and Barack Obama=US president, so, too, do religiously educated people know that religion=morality.

As simple and pleasing as this relationship may seem, it has at least three possible interpretations.

First, if religion represents the source of moral understanding, then those lacking a religious education are morally lost, adrift in a sea of sinful temptation. Those with a religious education not only chart a steady course, guided by the cliched moral compass but they know why some actions are morally virtuous and others are morally abhorrent.

Actually, it's not so much a lack of religious education which casts one adrift, it's the lack of any objective ground for moral judgment and moral obligation. If morality is not rooted in the goodness of a transcendent moral authority then it's entirely rooted in human subjectivity and what's moral is simply a matter of whatever feels right to me. Any ethics that seeks to ground itself in something other than God ultimately founders on the shoals of subjectivity, and, as we'll see Hauser's attempt is no exception.

Second, perhaps everyone has a standard engine for working out what is morally right or wrong but those with a religious background have extra accessories that refine our actions, fueling altruism and fending off harms to others.

Well, at least those who understand Christianity do. The "extra accessories" that the Christian has at her disposal are the twin motivators of love for, and gratitude to, God. The reason why there are relatively few charities run by atheists is that motives rooted in evolution will almost always drive people toward egoism rather than altruism. Love and gratitude, especially when directed toward something or someone beyond ourselves, are the most powerful incentives anyone has for caring about others, and the atheist has denied himself access to these resources.

Third, while religion certainly does provide moral inspiration, not all of its recommendations are morally laudatory. Though we can all applaud those religions that teach compassion, forgiveness and genuine altruism, we can also express disgust and moral outrage at those religions that promote ethnic cleansing, often by praising those willing to commit suicide for the good of the religious "team".

The obvious question Hauser raises for himself here is what standard is he using to judge compassion, forgiveness, and altruism as laudatory and ethnic cleansing as outrageous? Where does he get the idea that the former are good and the latter is bad? What is he basing this evaluation upon? The answer has to be either evolution or his own feelings, but if so how can either of these tell us that something is good or bad?

Indeed, an ethic based on evolution should see ethnic cleansing as a natural expression of the survival of the fittest gene pool. It should view suicide bombers as altruists sacrificing their own lives to promote the survival of the genes of the larger group of which he is a part.

In other words, Hauser wants to ground morality in the evolution of humanity, but as soon as he starts making moral judgments he finds himself forced to import values that have their source elsewhere. This is a problem that many naturalists face. They simply cannot consistently reconcile their naturalism with their moral sense. They see where the train of naturalist morality is taking them, and they don't like it so they make an irrational leap onto the back of Christian morality, and hope no one will notice as they piggyback upon the very assumptions they wish to discredit.


Evolutionary Ethics (Part II)

This post continues our discussion of Marc Hauser's essay Biology (Not Religion) Equals Morality in which he attempts to argue that morality can be, and should be, based upon our biological nature. You can read Part I here.

Hauser writes:

None of my comments so far are meant to be divisive with respect to the meaning and sense of community that many derive from religion. Where I intend to be divisive is with respect to the argument that religion, and moral education more generally, represent the only - or perhaps even the ultimate - source of moral reasoning. If anything, moral education is often motivated by self-interest, to do what's best for those within a moral community, preaching singularity, not plurality. Blame nurture, not nature, for our moral atrocities against humanity. And blame educated partiality more generally, as this allows us to lump into one category all those who fail to acknowledge our shared humanity and fail to use secular reasoning to practice compassion.

But why should we care about our "shared humanity?" Why should we practice compassion? Hauser never tells us. He just assumes that this is the right thing to do, but we need to ask him what fact of evolution or our biology is he basing this assumption upon? Indeed, what fact of our biology tells us that we should not act in our self-interest? To such questions Hauser gives no answer.

He adds this:

If religion is not the source of our moral insights - and moral education has the demonstrated potential to teach partiality and, therefore, morally destructive behaviour - then what other sources of inspiration are on offer?

One answer to this question is emerging from an unsuspected corner of academia: the mind sciences. Recent discoveries suggest that all humans, young and old, male and female, conservative and liberal, living in Sydney, San Francisco and Seoul, growing up as atheists, Buddhists, Catholics and Jews, with high school, university or professional degrees, are endowed with a gift from nature, a biological code for living a moral life.

This code, a universal moral grammar, provides us with an unconscious suite of principles for judging what is morally right and wrong. It is an impartial, rational and unemotional capacity. It doesn't dictate who we should help or who we are licensed to harm. Rather, it provides an abstract set of rules for how to intuitively understand when helping another is obligatory and when harming another is forbidden. And it does so dispassionately and impartially.

This is fascinating. It sounds exactly like what natural law philosophers and theologians have been saying for centuries. Indeed St. Paul writing to the church at Rome in the first century observed that everyone has a moral law "written on their hearts" (See Romans 2: 15).

But the question is not whether we have such a moral code or moral sense but rather where it comes from. This makes all the difference as to whether it is in any way incumbent upon us. If the code is inscribed on our hearts by God then it is presumably morally obligatory, but if it's the product of evolution then we're no more obligated to observe it than we are obligated to cover our mouth when yawning. If this law that Mr. Hauser thinks he has discovered is the product of blind chance and purposelessness which somehow conspired to fit us for life in the stone age then why should we live our lives by it today? It's merely an evolutionary vestige, like a man's beard, and can be ignored or removed with just as little moral consequence.

To argue that because we have a moral sense we are therefore bound to live by it is to commit the fallacy of deriving an "ought" from an "is" (sometimes called the naturalistic fallacy). It simply does not follow that because something is a certain way it therefore ought to be that way. Just because in some situations we feel compassion for others does not mean that if we didn't feel compassion we'd be in some sense morally wrong.

Moreover, evolution-based ethics are highly selective in what they deem right and wrong. On what basis, for instance, do we determine which of our evolved behaviors are morally good and which are not? Men are just as likely, perhaps more likely, to be selfish, cruel and violent as they are to be generous, kind, and peaceful. Both tendencies, according to Hauser's view, are part of our biological makeup and must result from our evolutionary development as a species. On what basis, then, does he prefer one behavior over the other? On what basis does he decide that we're required to do one and required to avoid the other? Why, exactly, should I care about the poor or care about the world my great-grandchildren will inherit? Why shouldn't I just live for myself and let the poor or future generations worry about their own survival? What answer based upon our biological make-up can Hauser possibly give to these questions?

The fact is that naturalistic, evolutionary ethics provide us no basis, other than one's individual feelings, for judging one behavior to be morally better than another and certainly no reason for thinking that we're in any way obligated to do one thing rather than its opposite. As a guide to moral behavior it is utterly useless.


Evolutionary Ethics (Part III)

This post concludes our discussion of Marc Hauser's essay Biology (Not Religion) Equals Morality in which he attempts to argue that morality can be, and should be, based upon our biological nature. You can read Parts I and II here and here.

Mr. Hauser's essay continues by presenting us with examples of moral dilemmas from which he draws the wrong conclusion:

... if five people in a hospital each require an organ to survive, is it permissible for a doctor to take the organs of a healthy person who happens to walk by the hospital? Or if a lethal gas has leaked into the vent of a factory and is headed towards a room with seven people, is it permissible to push someone into the vent, preventing the gas from reaching the seven but killing the one? These are true moral dilemmas - challenging problems that push on our intuitions as lay jurists, forcing us to wrestle with the opposing forces of consequences (saving the lives of many) and rules (killing is wrong).

Based on the responses of thousands of participants to more than 100 dilemmas, we find no difference between men and women, young and old, theistic believers and non-believers, liberals and conservatives. When it comes to judging unfamiliar moral scenarios, your cultural background is virtually irrelevant.

Well, maybe, but it shouldn't be. I would be among the last to say that moral choices are never excruciatingly difficult, but, in the cases that Hauser cites, not so much. The Christian is guided by one overarching principle: Always do the act which maximizes compassion and justice. In the scenarios that Hauser constructs it would be manifestly unjust to take organs from an unwilling passerby and equally unjust to push someone into the vent to save others, even if the others were children, even if they were your own children (surely an individual should jump into the vent himself rather than push another into it).

Hauser assumes, apparently, that everyone thinks in utilitarian terms which require of us that we produce the greatest happiness for the greatest number. A utilitarian could superficially justify sacrificing the happiness of one innocent person in order to maximize the happiness of many, but a Christian cannot.

What guides your judgments is the universal and unconscious voice of our species, a biological code, a universal moral grammar....If this code is universal and impartial, then why are there are so many moral atrocities in the world? The answer comes from thinking about our emotions, the feelings we recruit to fuel in-group favouritism, out-group hatred and, ultimately, dehumanisation.

Actually the answer is because atheism offers us no reason why we should not submit to our emotions, nor does it offer us any reason why we should care about anyone but ourselves, but that aside, on what biological or evolutionary grounds does Mr. Hauser condemn in-group favoritism or out-group hatred? These behaviors are as natural to our species as breathing. They've been encoded in our DNA by millenia of evolution. Why, in an atheistic view of things, are they wrong? What is the standard Mr. Hauser is smuggling in here in order to judge them as wrong?

It can't be that he finds warrant for disdaining them in our biological nature because these behaviors are fundamentally ingrained in that nature. It can't be that evolution gives him reason to condemn them because on his view evolution is responsible for their existence.

Mr. Hauser wants to say that out-group hatred is wrong but he can't tell us why. He wants to say, in effect, that there is a natural law written on our hearts that forbids such behavior, but no natural "law" rooted in our evolutionary development can be morally obligatory (see part II). Favoritism or hatred can only be wrong if the source of the natural law is a transcendent moral authority, and that's something Hauser's atheism does not allow.

Consider the psychopath, Hollywood's favourite moral monster. Clinical studies reveal that they feel no remorse, shame, guilt or empathy, and lack the tools for self-control. Because they lacked these capacities, several experts have argued that they lack the wherewithal to understand what is right or wrong and, consequently, to do the wrong thing. New studies show, however, that this conclusion is at least partially wrong. Psychopaths know full well what is right and wrong but don't care. Their moral knowledge is intact but their moral emotions are damaged. They are perfectly normal jurists but perfectly abnormal moral actors. For the psychopath, other humans are no different from rocks or artefacts. They are disposable.

In fact, if naturalism is true we should all be moral psychopaths. Remorse, guilt, shame, etc. are simply illusions that deceive us into thinking we've done something terribly wrong when in fact we haven't. Now that we're enlightened and realize, as atheist Michael Ruse puts it, that "morality is just an illusion fobbed off upon us by our genes in order to get us to cooperate," we should shed these emotions like a growing child sheds his fear of the dark and face the fact that we have nothing to feel guilty about because there's no such thing as guilt.

Guilt can only exist in a world in which our behavior stands condemned by a competent moral judge. In the world of the naturalist there are no moral judges, only, in Richard Dawkins' words, "blind, pitiless indifference."

RLC