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JUSTIFIED AND UNJUSTIFIED BELIEF
LETâS START WITH A STORY THAT SHOULD PUT SOME COMMON ground under the feet of both believers in miracles and nonbelievers. In the chapters that follow, weâll return now and then to the story. This way, if you find yourself disagreeing with the direction I take, you can retrace the path from our shared starting point to figure out where we began to diverge. This strategy, I hope, will help to sharpen our differences and might even lead you to clarify in your own mind why you believe in miracles if in fact you do.
So hereâs the story. Youâre sitting at a bar, chatting amiably with the fellow who straddles the stool next to you. He seems ordinary enough in his blue windbreaker and khaki pants. Clean shaven, brown hair receding a bit, heâs probably about forty-five years old. In the time itâs taken you to drink your first beer, you have discovered that you and he share many of the same life experiences. Both of you are married, have teenage children, hold white-collar jobs, and like to watch cooking programs on cable TV. Heâs a Minnesota Vikings fan, but you try not to hold that against him. You steer clear of politicsânot because youâre worried that youâll get into a heated discussion but just because itâs one of those conversations that ends up depressing you even when you find yourself agreeing with everything thatâs being said.
The more you talk, the more you like the guy. You get around to introducing yourselves by name. Heâs Jim. Jim likes to read crime novels, and you share a passion for Lawrence Blockâs Bernie Rhodenbarr series. He confides in you that he believes Lucille Ball was the most beautiful woman whoâs ever lived. OK, you think, thatâs a little weird, but thereâs a case to be made and, anyway, thereâs no accounting for taste. The afternoon stretches into evening.
âAnd Iâve got one for you,â Jim says, after youâve finished a joke about a guy who walks into a bar with a shoebox that contains a twelve-inch pianist. You order another beer, settling comfortably on your bar stool in anticipation of the joke to follow. âTrue story,â he begins, in just the way you expect a funny story to start. âThereâs a frog that lives on a lily pad in the middle of a lake in the Karnataka region of India. It can speak, and not just in the native tongues Urdu and Hindi but also German, English, French, and Navajo.â You smile, imagining the frog in conversation with a Navajo. âAnd people who have visited the frog,â he continues, âreport marvelous happenings. Some have been cured of cancer, others find amputated limbs regenerating, and still others have brought dead pets to the frog. It waves its little arms around and says some things in a language no one understands, and the pets come back to life.â Jim pauses, looking up at the ceiling as if in thought. âNever ferrets, though,â he mumbles. âI wonder whatâs up with that?â He then looks into his mug, which is nearly empty now. You stir in your chair, waiting for the punch line. Was that it? âNever ferrets?â Did you miss something, or maybe it was just a lousy joke?
âYeah,â Jim finally says, looking into his empty mug. âSomeday Iâm going to visit that frog.â Oh, you think. Maybe that was the punch line. Ha ha. You wait for more, but your new friend seems to have finished. He catches the bartenderâs eye and gestures for another beer.
âWas that it?â you ask, trying not to show your annoyance. âNot much of a joke.â
âJoke?â he says, raising his eyebrows. âThat was no joke. Like I told you, itâs a true story. That frogâs as real as this bar,â he says, rapping his knuckles on the polished wood in front of you. You look closely at Jimâs face for signs that he might be pulling your leg. âCome on, Jim,â you think. âCrack a smile or wink or do something that tells me youâre only kidding.â But he just leans forward to grab the newly replenished mug.
âYouâre serious?â you say weakly, hope fading that you can salvage your budding friendship. âYou really think that a magic frog lives in some place called Karntaka?â
âKarnataka,â Jim corrects you. âAnd yes. I really believe it.â
âBut you havenât seen it yourself,â you continue.
âNope.â
âSo what makes you think it really exists?â you ask, making an effort to keep your tone respectful.
âIâve got friends whoâve seen it,â he says. âWell,â he hurries to add, ânot actually. But friends of friends. Or maybe, to tell the truth, itâs friends of friends of friends. Whatever. Iâve heard about the frog, and I believe what Iâve been told.â
End of story.
Common Ground
I said that my intent in offering this story is to provide believers and nonbelievers in miracles with some common ground. I hope the story does not offend believers, who might take umbrage at what they see as a haughty suggestion that the miracles reported in, say, the New Testament are on par with a moderately inebriated personâs tale of a magical frog. We will have ample time in the following chapters to assess this possibility.
For now, as much as we can, letâs detach the story of the frog from any thoughts about miracles. I promise that weâll come to miracles soon enough. Hereâs what I want us to agree on: Jim really does believe in the existence of a frog in Karnataka that speaks many languages and performs incredible deeds, but that doesnât mean that he is justified in believing this story. This difference between believing something and being justified in believing something is absolutely crucial, so in the next section I explain how I understand the difference. However, I expect that even now the distinction sounds familiar to most of us. We all recognize the difference between simply believing that our favorite team will win the Super Bowl and being justified in believing it will. In the former, the belief is more like a wish, as I discussed already in the preface to this book. In the latter, we think we have evidence that actually speaks to the probability that our team will win. An unjustified belief is often like a wishâsomething you believe not because the available evidence convinces you it must be true but because you want it to be true. We will eventually be in a position to see why Jimâs belief in the miraculous Karnatakan frog is more like a wish. He might want to believe that it exists, but he is not justified in believing that it does.
Furthermore, I think we should agree that whether Jim is currently justified in believing in the existence of the miraculous frog is distinct from the question about whether the frog really does exist. This assertion might seem strange or surprising at first. If the frog does exist, why isnât Jim justified in believing that it does? I have more to say about this distinction later, but the basic idea is that the existence of a miraculous frog is one thing; whether anyone is justified in believing in its existence is quite another. This distinction, on reflection, should also not seem so peculiar. We see it in action all the time in courtroom dramas, where the guilt or innocence of a defendant is in question. Whether the defendant is guilty is one thing; whether the jury is justified in believing that the defendant is guilty is quite another. The prosecutorâs job is to provide the members of the jury with enough evidence to make them justified in believing in the defendantâs guilt. If the prosecutor is good, she will be able to do this. In fact, she will be able to do it whether the defendant really is guilty or not. Similarly, I am claiming here that we can separate the question of whether Jimâs belief in the miracle-working frog is justified from the question of whether his belief is trueâthat is, whether the frog really exists.
My job in the next section is to clarify and defend the remarks I have made about Jim and the frog. Of course, you might already be comfortable with the idea that Jim is free to believe in the Karnatakan frogâs existence without being justified in his belief. And maybe youâre prepared to agree that Jimâs belief in the frog might be unjustified even if the frog actually exists. If so, reading the next section should help to illuminate our reasons for agreement. However, if youâre wondering why we should agree on these points, then I look forward in the next section to convincing you that I am right.
A Little Epistemology
The philosopherâs interest in knowledge is as old as philosophy itself, and thatâs pretty old. Epistemology is just a fancy word for the field of philosophy that concerns itself with questions about knowledge and justification. For example, philosophers interested in epistemology ask questions such as âIs it possible to know anything?â This question might seem like one of those silly matters that make philosophers an easy target for people who actually work for a living. Of course we can know things, you might say. Hereâs a list of things we know: water freezes at 32°F; whales are mammals; 2 + 3 = 5; Australia is in the Southern Hemisphere; a square has four sides of equal length.
I agree that I know all the propositions I just mentioned, and, moreover, most (but not all!) philosophers would concede the same. Very few philosophers are skeptics about knowledge. But one way to understand the philosopherâs question about what we can know is a subtler question about what it means to know something. Or, put another way, the philosopher wants to know what knowledge is. We clearly know some thingsâsuch as those things mentioned earlierâbut not others. For instance, we know that other planets exist, but we donât know whether there is life on other planets (although we may believe that there is). We know that there exists no largest prime number because Euclid proved it, but we donât know whether every even number greater than two can be expressed as the sum of two prime numbers (the claim that they can be is called Goldbachâs conjecture). But what makes some beliefs count as knowledge but others not? Without an answer to this question, we are straight back to wondering whether we can know anything.
But this book isnât about knowledge; itâs about justification. Justification requires less than knowledge does in the sense that you can be justified in believing a proposition even if you donât know it, but you canât know something without having justification for believing it. It takes more to know something than it does to be justified in believing it. This means that even though my focus is on whether belief in miracles can be justified, my conclusion has consequences for whether we can know that there have been miracles. Because knowledge depends on justification, if weâre not justified in believing in miracles, we canât know that they have occurred.
Very important for our purposes is the distinction between justified belief and unjustified belief. Hereâs an example of an unjustified belief that my mother-in-law had. She thought that because she had already had four daughters, her fifth child would be a boy. This belief was unjustified because births have no influence on each other. Having had a bunch of daughters doesnât increase the probability that your next child will be a son. To think it does is to commit the notorious gamblerâs fallacy of thinking that you should bet red on roulette because the ball has landed on black five times in a row, and so now the odds must be better that the ball will land on red. Theyâre not better. Same goes for coin flips. If the coin is fair, ten heads in a row tells you absolutely nothing about whether the eleventh flip is more or less likely to land tails up.
I might also point out that even though my mother-in-law was not justified in believing that her fifth child would be a son, her belief may have been true (but it wasnâtâshe gave up on having a boy after five girls). Whether a belief is true or false doesnât depend on whether it is justified but on how the world is. You can have true but unjustified beliefs, just as you can have false justified beliefs, as weâll soon see.
To understand the extent of our unjustified beliefs, I need to draw a further distinction between having a justification for believing something and having an explanation for believing something. This is a more precise way of drawing a distinction I mentioned in the preface between good reasons and bad reasons. Making this distinction is necessary because some people might deny that bad reasons are reasons at all, just as some might deny that a joke that isnât funny is really a joke. So to make everyone happy, letâs use the word reason to refer to something that raises the chance of some belief being true or, equivalently for our purposes, to something that contributes to justification for the belief. In contrast, I use the word explanation to refer to something that does nothing to raise the chance that a belief is true.
My mother-in-law, then, could explain why she believed that her fifth child would be a boy: she had already had four daughters; a run of four daughters was very unlikely, she thought, and a run of five daughters would be even more unlikely. Therefore, the chance that her next child would be a boy was high. Although this is an explanation for her belief, itâs not a justification.
I think this distinction between explanations and justifications is especially intuitive when talking about morality. The schoolyard bully might be able to explain why he has beaten up a classmateââI didnât like his face!ââbut that assertion hardly justifies his actions. His behavior was wrong even though he certainly could explain why he behaved as he did. This example shows that explanation and justification are distinct notions. The distinction holds in my mother-in-lawâs case as well. She could explain why she believed that her next baby would be a boy, but her explanation failed to justify her belief.
How do we know when reasons for believing something count as a justification and when they do not? Justification, as philosophers understand it, should raise the probability that the belief really is true. One way to make this clear is by contrasting true beliefs that are justified with true beliefs that are not. In the latter case, luck plays a role that it does not in the former. Suppose, for instance, that my mother-in-lawâs belief turned out to be true: her fifth child was in fact a boy. If the belief were true, its truth would not be for the explanation she provided for it. Her explanation was bogus. Rather, she would have been right about the sex of her fifth child just because her chances of having a boy were roughly 50 percent, and it just so happened that (weâre supposing) a boy is what she had.
However, when we look at justified beliefs, the role of luck is minimized. Consider another case. You heft a bag of Halloween candy that you have removed from your childâs bedroom. Halloween was two weeks ago, and you have decided that sheâs consumed enough sweets by now. But that doesnât mean that you shouldnât enjoy a piece. You reach into the bag hoping for a Reeseâs peanut butter cup and pull out a Heath bar. Yuck. You hate Heath bars. Tossing it into the trash, you reach into the bag again and pull out another Heath bar. This too you fling into the trash. After repeating this same operation twenty times, and with only one piece of candy left in the bag, you form the belief that the next piece of candy you remove from the bag will be a Heath bar. Sure enough, you choke back your tears as you extract yet another Heath bar from the bag. Your belief was true.
The basis for your belief that the last piece of candy in the trick-or-treat bag is a Heath bar differs dramatically from the basis of my mother-in-lawâs belief about the sex of her next child. Both cases, weâre imagining, might involve a true belief, but whereas my mother-in-lawâs belief was true âby luck,â your belief about the next piece of candy was not. The more Heath bars you pull from the bag, the more likely it becomes that Heath bars are the only things that remain. Why? Odds are that if your daughter had left a variety of different candies in the bag, you would have pulled out something else by the time you reach the last few piecesâa Reeseâs peanut butter cup, perhaps. Clearly, your daughter shares your dislike of Heath bars.
Many beliefs that people hold lack justification. Some people believe that crystals have a power to heal cancer or prevent baldness or that large hairy primates roam Americaâs woodlands. I think these beliefs are silly, but thatâs not to say that people donât have explanations for them. I recently saw a television program about the search for Sasquatches. It depressed me terribly. A person reported being in a tent deep in the woods on a dark night. Something pressed against his tent, startling him awake. He suspected it was a Sasquatch. The Sasquatch âexpertâ interviewing him asked whether he had seen the beast, but he hadnât. The expert then said that this was really good evidence that the creature that disturbed the camper was indeed a Sasquatch because Sasquatches are rarely seen. The camper seemed satisfied with this âjustificationâ for his belief that a Sasquatch really had been present. (Is not seeing a Sasquatch better evidence for believing in them than actually seeing one? I wonder.) Similarly, you might mention your horoscope to explain why you believe that you should not leave your house today, but a horoscope cannot justify your belief. Even if the belief that you shouldnât leave your house today turns out to be true (when you do, you slip on some ice and break your wrist), itâs only luck that connects your horoscope to your misfortune.
TABLE 1.1 Kinds of True Beliefs |
| TRUE BELIEFS |
JUSTIFIED | The next piece of candy is a Heath bar. |
UNJUSTIFIED | The next child will be a boy. |
To keep track of the relationships between the truth of a belief and its justification, letâs begin to build a table. Table 1.1 illustrates the distinction between true beliefs that are justified, such as the belief you formed on the basis of pulling candy from your daughterâs trick-or-treat bag, and true beliefs that are not justified. An example of the latter is my mother-in-lawâs belief that her fifth child will be a boy (assuming it was). This belief, even if it turned out to be true, would not be justified because the explanation offered in its support is defect...