Oct 27 JDN 2460611

In a previous post, I defended the existence of compatibilism and free will. There are a few subtler issues with free will that I’d now like to deal with in this week’s post.

The ability to do otherwise

One subtler problem for free will comes from the idea of doing otherwise—what some philosophers call “genuinely open alternatives”. The question is simple to ask, but surprisingly difficult to answer: “When I make a choice, could I have chosen otherwise?”

On one hand, the answer seems obviously “yes” because, when I make a choice, I consider a set of alternatives and select the one that seems best. If I’d wanted to, I’d have chosen something else. On the other hand, the answer seems obviously “no”, because the laws of nature compelled my body and brain to move in exactly the way that it did. So which answer is right?

I think the key lies in understanding specifically how the laws of nature cause my behavior. It’s not as if my arms are on puppet strings, and no matter what I do, they will be moved in a particular way; if I choose to do something, I will do it; if I choose not to, I won’t do it. The laws of nature constrain my behavior by constraining my desires; they don’t constrain what I do in spite of what I want—instead, they constrain what I do through what I want. I am still free to do what I choose to do.

So, while my actions may be predetermined, they are determined by who I am, what I want, what experiences I have. These are precisely the right kind of determinants for free will to make sense; my actions spring not from random chance or external forces, but instead from my own character.

If we really mean to ask, “Could I (exactly as I was, in the situation I was in) have done otherwise (as free choice, not random chance)?” the answer is “No”. Something would have to be different. But one of the things that could be different is me! If I’d had different genes, or a different upbringing, or exposure to different ideas during my life, I might have acted differently. Most importantly, if I had wanted a different outcome, I could have chosen it. So if all we mean by the question is “Could I (if I wanted to) have done otherwise?” the answer is a resounding “Yes”. What I have done in my life speaks to my character—who I am, what I want. It doesn’t merely involve luck (though it may involve some luck), and it isn’t reducible to factors external to me. I am part of the causal structure of the universe; my will is a force. Though the world is made of pushes and pulls, I am among the things pushing and pulling.

As Daniel Dennett pointed out, this kind of freedom admits of degrees: It is entirely possible for a deterministic agent to be more or less effective at altering its circumstances to suit its goals. In fact, we have more options today than we did a few short centuries ago, and this means that in a very real sense we have more free will.

Empirically observing free will

What is really at stake, when we ask whether a person has free will? It seems to me that the question we really want to answer is this: “Are we morally justified in rewarding or punishing this person?” If you were to conclude, “No, they do not have free will, but we are justified in punishing them.”, I would think that you meant something different than I do by “free will”. If instead your ruling was “Yes, they have free will, but we may not reward or punish them.”, I would be similarly confused. Moreover, the concern that without free will, our moral and legal discourse collapses, seems to be founded upon this general notion—that reward and punishment, crucial to ethics and law (not to mention economics!) as they are, are dependent upon free will.

Yet, consider this as a scientific question. What kind of organism can respond to reward and punishment? What sort of thing will change its behavior based upon rewards, punishments, and the prospect thereof? Certainly you must agree that there is no point punishing a thing that will not be affected by the punishment in any way—banging your fist on the rocks will not make the rocks less likely to crush your loved ones. Conversely, I think you’d be hard-pressed to say it’s pointless to punish if the punishment would result in some useful effect. Maybe it’s not morally relevant—but then, why not? If you can make the world better by some action, doesn’t that, other things equal, give you a moral reason to perform that action?

We know exactly what sort of thing responds to reward and punishment: Animals. Specifically, animals that are operant-conditionable, for operant conditioning consists precisely in the orchestrated use of reward and punishment. Humans are of course supremely operant-conditionable; indeed, we can be trained to do incredibly complex things—like play a piano, pilot a space shuttle, hit a fastball, or write a book—and, even more impressively, we can learn to train ourselves to do such things. In fact, clearly something more than operant conditioning is at work here, because certain human behaviors (like language) are far too complex to learn by simple reward and punishment. There is a lot of innate cognition going on in the human brain—but over that layer of innate cognition we can add a virtually endless range of possible learned behaviors.

That is to say, learning—the capacity to change future behavior based upon past experience—is precisely in alignment with our common intuitions about free will—that humans have the most, animals have somewhat less, computers might have some, and rocks have none. Yes, there are staunch anthropocentrist dualists who would insist that animals and computers have no “free will”. But if you ask someone, “Did that dog dig that hole on purpose?” their immediate response will not include such theological considerations; it will attribute free choice to Canis lupus familiaris. Indeed, I think if you ask, “Did the chess program make that move on purpose?” the natural answer attributes some sort of will even to the machine. (Maybe just its programmer? I’m not so sure.)

Yet, if the capacity to respond to reward and punishment is all we need to justify reward and punishment, then the problem of free will collapses. We should punish criminals if, and only if, punishing them will reform them to better behavior, or set an example to deter others from similar crimes. Did we lose some deep sense of moral desert and retribution? Maybe, but I think we can probably work it back in, and if we can’t, we can probably do without it. Either way, we can still have a justice system and moral discourse.

Indeed, we can do better than that; we can now determine empirically whether a given entity is a moral agent. The insane psychopathic serial killer who utterly fails to understand empathy may indeed fail to qualify, in which case we should kill them and be done with it, the same way we would kill a virus or destroy an oncoming asteroid. Or they may turn out to qualify, in which case we should punish them as we would other moral agents. The point is, this is a decidable question, at least in principle; all we need are a few behavioral and psychological experiments to determine the answer.

The power of circumstances

There is another problem with classical accounts of free will, which comes from the results of psychology experiments. Perhaps the most seminal was the (in)famous experiment by Stanley Milgram, in which verbal commands caused ordinary people to administer what they thought were agonizing and life-threatening shocks to innocent people for no good reason. Simply by being put in particular circumstances, people found themselves compelled to engage in actions they would never have done otherwise. This experiment was replicated in 2009 under more rigorous controls, with virtually identical results.

This shows that free will is much more complicated than we previously imagined. Even if we acknowledge that human beings are capable of making rational, volitional decisions that reflect their character, we must be careful not to presume that everything people do is based upon character. As Hannah Arendt has pointed out, even the Nazis, though they perpetrated almost unimaginable evils, nonetheless were for the most part biologically and psychologically normal human beings. Perhaps Hitler and Himmler were maniacal psychopaths (and more recently Arendt’s specific example of Eichmann has also been challenged.), but the vast majority of foot soldiers of the German Army who burned villages or gassed children were completely ordinary men in extraordinarily terrible circumstances. This forces us to reflect upon the dire fact that in their place, most of us would have done exactly the same things.

This doesn’t undermine free will entirely, but it does force us to reconsider many of our preconceptions about it. Court systems around the world are based around the presumption that criminal acts are committed by people who are defective in character, making them deserving of punishment; in some cases this is probably right (e.g. Jeffrey Dahmer, Charles Manson), but in many cases, it is clearly wrong. Crime is much more prevalent in impoverished areas; why? Not because poor people are inherently more criminal, but because poverty itself makes people more likely to commit crimes. In a longitudinal study in Georgia, socioeconomic factors strongly predicted crime, especially property crime. An experiment at MIT suggests that letting people move to wealthier neighborhoods actually makes their children less likely to commit crimes. A 2007 report from the Government Accountability Office explicitly endorsed the hypothesis that poverty causes crime.

Really, all of this makes perfect sense: Poor people are precisely those who have the least to lose and the most to gain by breaking the rules. If you are starving, theft may literally save your life. Even if you’re not at the verge of starvation, the poorer you are, the worse your life prospects are, and the more unfairly the system has treated you. Most people who are rich today inherited much of their wealth from ancestors who violently stole it from other people. Why should anyone respect the rules of a system that robbed their ancestors and leaves them forsaken? Compound this with the fact that it is harder to be law-abiding when you are surrounded by thieves, and the high crime rates of inner cities hardly seem surprising.

Does this mean we should abandon criminal justice? Clearly not, for the consequences of doing so would be predictably horrendous. Temporary collapses in civil government typically lead to violent anarchy; this continued for several years in Somalia, and has happened more briefly even in Louisiana (it was not as terrible as the media initially reported, but it was still quite bad.) We do need to hold people responsible for their crimes. But what this sort of research shows is that we also need to consider situational factors when we set policy. The United States has the highest after-tax absolute poverty rate and the highest share of income claimed by the top 0.01\% of any First World nation—an astonishing 4%, meaning that the top 30,000 richest Americans have on average 400 times as much income as the average person. (My master’s thesis was actually on the subject of how this high level of inequality is related to increased corruption.) We also have the third-highest rate of murder in the OECD, after Mexico (by far the highest) and Estonia. Our homicide rate is almost three times that of Canada and over four times that of England. Even worse, the US has the highest incarceration rate in the world. Yes, that’s right; we in the US imprison a larger portion of our population than any other nation on Earth—including Iran, China, and Saudi Arabia.

Social science suggests this is no coincidence; it is our economic inequality that leads to our crime and incarceration. Nor is our poverty a result of insufficient wealth. By the standard measure Gross Domestic Product (GDP), an estimate of the total economic output a nation produces each year, the United States has the second-highest total GDP at purchasing power parity (China recently surpassed us), and the sixth-highest GDP per person in the world. We do not lack wealth; instead, we funnel wealth to the rich and deny it from the poor. If we stopped doing this, we would see a reduction in poverty and inequality, and there is reason to think that a corresponding reduction in crime would follow. We could make people act morally better simply by redistributing wealth.

Such knowledge of situational factors forces us to reconsider our ethical judgments on many subjects. It forces us to examine the ways that social, political, and economic systems influence our behavior in powerful ways. But we still have free will, and we still need to use it; in fact, in order to apply this research to our daily lives and public policies, we will need to exercise our free will very carefully.