DAN ARIELY

Updates

December 25, 2014 BY danariely

surfing santaOur local California native Troy Campbell discusses the reason, rational or not, Californians come to love their sunny type of  holidays.

As a Southern Californian native, nonnatives always assume I must be sad every time Christmas rolls around and it’s not white. They tell me that I must feel blue because something “essentially Christmas” or “properly winter” is missing.

Yet, nothing could be further from the truth. While the world assumes Californians are sad on Christmas day, many Californians are actually quite happy as we stroll along the beach and enjoy the unique concept of a Southern California Christmas.

As the Southern Californian band Jack’s Mannequin sings: “It’s Christmas in California and it’s hard to ignore that it feels like summer all the time, but I’ll take a West Coast Winter … It’s good to be alive.”

Screen Shot 2014-12-24 at 6.13.32 PM

If you moved here you would probably hate this “always summer” vibe. You would probably miss the snow and the cold. But we don’t. We don’t dwell on how we are missing out on the typical winter traditions, because winter does not mean the same things to us that it does to you.

 For us, winter means putting on a long-sleeve T-shirt and sharing a peppermint flavored frozen yogurt on a sunny patio; or taking a late-night walk on a decorated pier, possibly after a Christmas Eve service with the people we love; or strolling down Disneyland’s Main Street under the artificial (but quite awesome) snow. Experiences gain value through memories and localized meanings not just global meanings.

If Southern Californians wanted to, we could drive inland and be in the snow in a few hours or less and enjoy the global stereotypes of Christmas. But we don’t all migrate inland for the winter. Why? Because that’s not who we are and that’s not what winter or Christmas means to us.

In the winter season, many Californians often even develop what social scientists call an “oppositional identity.” We choose to swim or surf on Christmas Day and we proudly (and sometimes annoyingly) post photos of how beautiful and completely unmiserable it truly is here. In Southern California and the West Coast at large, we develop traditions in opposition to traditional winter norms.

my-favorite-part-of-winter

In general, the world is often jealous of our generally perfect weather. So it is understandable that the world would like to think that for one season or just one Christmas Day, Southern Californians are jealous of others’ weather. But the truth is, were are not jealous. Maybe we’re missing something. Maybe we should be jealous of those enjoying a White Christmas. But because of who we are and the way we have grown up, we will never be convinced that anything is missing from our West Coast Winter.

When West Coasters are on the beach, with a new pair of Rainbow sandals fresh from the San Clemente outlet, a board in their hand, and In-N-Out Burger in their other hand, watching a pelican fly over the Christmas lights on the pier, it doesn’t feel like the moment is missing anything! In fact, for a Southern Californian native, a moment like this could not feel any more complete.

So let me wish everyone everywhere a happy holidays, whether you are somewhere as beautiful as California or as miserable as where you are. Sorry, couldn’t resist. But it is likely that wherever you are, you’ve come to love your type of Christmas or holidays. It’s just how the mind works, and whether that is irrational or not,  it is in this case quite fantastic for us all.

By Troy Campbell

December 20, 2014 BY danariely

Here’s my Q&A column from the WSJ this week  and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com.

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Dear Dan,

How would you handle a community college student who—bluntly put—just smells absolutely horrendous? My other students are complaining that they can’t focus in the classroom. I think that the student should be made aware of her smell so that she can try to resolve it and avoid jeopardizing her social and professional future—but I’m not sure how to broach the topic.

— Kelly 

Sharing this information isn’t going to be easy, but doing so could create many long-term benefits for the student, the community and maybe even yourself—which is why you should definitely tell her.

It might be tempting to convey the information anonymously, which would save you some awkwardness, but it isn’t in the student’s best interest. Some research shows that it is particularly nice to get an anonymous love note because the uncertainty lets us imagine that we are adored by many people. The opposite is likely to be the case with an anonymous note about a negative trait.

My advice: sit the student down and break the news to her. You could start by saying that some people are more sensitive to smell than others and that you suspect her sensitivity is below average. Next, tell her that she has an odor that is noticeable to others and add that you worry that this is making interactions more difficult for her. Finally, offer your ongoing help as she tries to figure out what works for her and what doesn’t.

One last point: A while ago, I decided that every time I see someone with something in their teeth, I would tell them about it. Making this a rule was very helpful for me because now I don’t even need to consider whether to raise this potentially embarrassing point—and 100% of the time, people have thanked me for telling them.

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Dear Dan,

What’s the best way to give a guest speaker a gift they would truly love and appreciate?

—Wilma

Not long ago, I gave some lectures to a very nice group of people. At the end of the retreat, they held an auction of all kinds of souvenirs, and I bid on a homemade blanket that I particularly liked. Later that night, I discovered, they took the blanket out of the auction after I bid on it and gave it to me as a gift.

This was particularly nice for three reasons. First, I clearly liked the blanket because I bid on it. Second, I assumed that other people also wanted it. And finally, it didn’t have a real market value. All this made it a wonderful, highly appreciated gift without a specific price tag.

If you’re willing to be a bit manipulative, you could take this approach a step further: What if you held a live auction, and when you saw something that the guest speaker was interested in, you got other people to dramatically outbid him or her (offering, say, 10 times more than the speaker would)—and, at the end of the night, gave the item in question to the speaker? This process would make clear that your guest coveted the item, as did other people, and that its value was very high. Clearly an ideal gift.

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Dear Dan,

Why will many people not stop on the street to pick up a dime but would certainly stop to pick up a dime if it fell out of their pocket? Isn’t the value of 10 cents the same in both cases?

—Baruch

These might seem like the same case, but they aren’t. When we pick up 10 cents, we add to our wealth (just a bit), but when we reclaim a dime that we dropped, we prevent a loss—and preventing a loss is much more important and valuable.

See the original article in the Wall Street Journal here.

December 6, 2014 BY danariely

Here’s my Q&A column from the WSJ this week  and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com.

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Dear Dan,

I’ve noticed more people taking selfies. Some are even walking around with specially designed phone holders that help position their phones a bit farther away for taking better selfies. I’m not part of this selfie age group, and I find it all odd and somewhat annoying. Can you help me understand the fascination? Why can’t the new generation take pictures the good old way?

—Ayelet

The selfies phenomenon is complex, but here are some highlights: Its starting point is those moments we want to capture, for our own memories or to share with others. Now, if we were to stop what we’re doing and ask a stranger to take our picture, we would be stepping out of the moment emotionally: We’d have to stand still while smiling artificially, wait for the picture to be snapped, then try to get back to whatever were doing and feeling.

Selfies solve this problem because we don’t step out of the moment. A selfie can even enhance the moment by getting us to stand closer to one another and look at ourselves together on-screen—a sort of celebration of the shared experience.

Another interesting thing about selfies: We always expect them to produce an awkward, low-quality picture. So those of us who always worry about how we look on camera don’t need to fret as much: Everyone looks bad.

Finally, there is an important interplay between language and decision making at work here: Once we gave a name to the activity of huddling together, looking up at a phone from an uncomfortable angle and taking a picture, it became socially acceptable.

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Dear Dan,

Setting up automatic retirement savings mechanisms (where the default is participation but people can opt out) has been shown to increase savings rates in wealthy countries such as the U.S., Denmark and the Netherlands. But what can be done to raise savings rates in developing countries, where many people work in the informal economy, don’t get regular paychecks and lack access to sophisticated banking services?

—Varun

A recent World Bank report offers some hope. In Kenya, according to the bank, many households report that a lack of cash often holds them back from investing in preventive health products such as insecticide-treated mosquito nets. To help Kenyans save for such needs, researchers provided families with a lockable metal box, a padlock and a place to write the name of the desired item. Simply by making these boxes available, researchers increased the purchase rates of these preventive health products by 66% to 75%, the report said.

The idea behind this approach is that people tend to allocate their funds through a process of “mental accounting” in which they define categories of spending and structure their outlays accordingly. The metal box, the lock and the label all helped people to put money in a separate account dedicated to preventive health products.

More generally, this is an example of the value of labeling for saving and spending—something that each of us can probably use when salting money away for vacations or a rainy-day fund and when grappling with how much to spend on groceries, going out and home renovations.

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Dear Dan,

Broadly speaking, does the advantage of attractiveness differ across gender? Is it better to be attractive as a woman or as a man?

—Ajit

Some scientists theorize that babies look more like their fathers than their mothers so that nature can prove to the father that the baby is indeed his. Once the father is convinced, the baby can morph to look more like the mother. My own theory is that, since babies are often bald, wrinkled and far from attractive, they tend to look more like their fathers. As for your question: Given the rarity of attractive males, I suspect that the (very) few that fit the bill get a larger advantage.

 

See the original article in the Wall Street Journal here.

November 27, 2014 BY danariely

Every day of the year, American shoppers act irrationally. On Black Friday, however, shoppers’ irrationality and wildness climb to dangerously high levels. Why does Black Friday lead shoppers to grab and fight, especially when the stakes are often as low as fifty percent off toasters?

Over the last few decades, social scientists have cataloged the many different factors that lead to irrational consumer behavior, and Black Friday touches on nearly that entire list.

Luckily though, if shoppers stay aware of how Black Friday is designed to make them irrational—and if they take breaks, eat snacks, plan ahead, and keep a clear mind—then they can avoid falling victim to the “holiday.”

Here are seven reasons shoppers become so irrational and committed to deals on Black Friday, as well as a few ways you can protect yourself.

#1
Black Friday is like a hazing ritual

Black Friday shoppers are dedicated—they sacrifice sleep, football games, and significant others’ approval to make the early bird sales.

When people go through pain and effort to reach a goal, then the goal actually looks more attractive in an attempt to justify the unpleasant struggle. Effects like this are common—think of brutal college hazing rituals, where new members commit more intensely to the group rather than turn away.

A shopper’s first sleepless Black Friday is like a hazing ritual that makes the deals seem that much more attractive—they must be worth it after all that effort.

#2
Shoppers are too “depleted” to be rational

People are vulnerable to irrational tendencies all the time, but they are at their most vulnerable when they’re tired and overwhelmed. Behavioral scientists call this state “depletion.”

In a state of depletion, people just don’t have enough willpower to resist temptation or the cognitive faculties to make complex decisions. Even math whizzes and businesses majors will falter when depleted.

Black Friday shoppers arrive sleep-deprived and stressed from the holidays. For companies, Black Friday can seem like taking candy from a baby. Only here the baby resists even less.

#3
What’s another $10 after the first $500?

It hurts to spend money. There’s pain in parting with $10 for a flash stick. However, after spending $899 on a TV, the pain one feels parting with a Hamilton for a flash stick is practically gone.

Restraint on Black Friday is even more unlikely because many shoppers tend to begin with the purchase of a large ticket item, like a TV or computer. After the big purchase, every $10 flash stick, $11 dollar t-shirt, or $13 kitchen knife, will not lead to the “pain of paying” that keeps people from buying every random thing on aisle during the other 364 days of the year.

Nobel Prize winners Daniel Kahneman and Amos Tversky explain that people are initially “loss averse”: initially people really do not like losing money. However, once people start losing money, their aversion to losing money starts to go away. Accordingly, cautious spenders can quickly become big spenders.

#4
The shopping momentum phenomenon

Ever thought your friends turn into entirely different people when they go shopping? Well, scientific research suggests that indeed shopping does change people.

Yale consumer researcher Ravi Dhar and colleagues find we are in a careful “deliberative” mind-set before purchasing an item—carefully weighing the pros and cons. Yet after the first purchase, a floodgate of “shopping momentum” opens up, and we make purchases more readily after.

Fortunately, the phenomenon of “shopping momentum” can be interrupted by a break in shopping. However, on frantic Black Friday breaks rarely occur, so shopping momentum is likely to persist for hours, if not the entire day.

#5
The Halo Effect — Amazing By Association

One problem for shopper rationality is that the amazing door buster deals on Black Friday may create a “Halo Effect” such that even the bad deals seem amazing by association.

Black Friday shoppers are better off thinking of Black Friday as a day that has both good and some bad deals. Not every sale is a bargain.

#6
Black Friday requires math skills many consumers don’t have

To distinguish the good from the bad deals, it takes a little bit of math. But research shows many adult Americans lack the basic math skills necessary to evaluate the merits of a deal. For instance, many Americans don’t know that 10 percent of 1,000 is 100 or that 1/4 is larger than 3/20.

Many Americans have what is known as “low numeracy” which means missing questions that national standards say elementary children should know. Are shoppers smarter than a 5th grader? Most often, the answer is no.

If shoppers don’t have the math skills, they are likely to get swept up in Black Friday. Shoppers without strong math skills  should feel encouraged to bring along  a friend who does, or even utilize smart phone applications that allow for better product evaluation.

#7
There’s no guilt when everybody’s doing it

Businesses want Black Friday to be crowded. Not just because they want lots of wallets, but because crowds change people. In the case of Black Friday, crowds can remove all sense of guilt.

Few shoppers feel guilty buying another half-off toaster when the customers next to them have flat screens in their carts. When everybody’s peers are doing it and some peers are “doing it worse,” the painful experience of parting with money becomes a joyous spending spree.

Indeed, research on “social influence” finds that the examples of others can drive people to irrational and even unethical behavior.

Final Reminders

Don’t get too tired. Use a calculator. Decide what you want ahead of time. And don’t get brainwashed. Yes, Black Friday is fun. Yes, Black Friday is a day of great deals. But Black Friday is also a trap that’s very easy to fall into. Happy and responsible shopping everyone!

 

By Troy Campbell

Originally posted last Black Friday.

November 22, 2014 BY danariely

Dear Dan,

Thanksgiving is around the corner, including Black Friday, the largest shopping day of the year, when many people spend way too much money. How do we stop this insanity?

—John

People do spend a lot of money on Black Friday, but is that really so irrational? To figure that out, we need to ask which state of the world we should compare this tradition to. If you assume that we could get people to blow less money on Black Friday and decrease overall irresponsible spending, then of course the world would be a better place without Black Friday.

But what if canceling Black Friday just spurred people to start living beyond their means every month of the year? And what if this extra increase in monthly splurging turned out to be larger than the spending increase on Black Friday itself? If all this were true, we would be better off with Black Friday.

Let’s think about dieting as an analogy for shopping. Many diets allow for a “cheat day” because they realize that without the permission to indulge sometimes, people are likely to give up dieting altogether. So the people who design diets have figured out that allowing people to go wild from time to time helps them behave well most of the time. What if Black Friday is the shopping equivalent of the cheat day?

I don’t endorse wasting money, but perhaps we should all figure out how much money we are willing to splurge with, take it in cash and indulge—but only at decent intervals.

November 22, 2014 BY danariely

Here’s my Q&A column from the WSJ this week  and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com.

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Dear Dan,

Recently, the German auto maker Daimler gave employees the option of automatically deleting all emails that arrive while they’re on vacation. Senders get a note suggesting that they resend their email later or write to other colleagues who are still in the office. This way, employees don’t have to face overflowing inboxes when they return. Is this a good idea?

—Kathleen

Not having to worry about email while you’re on vacation sounds wonderful, and this policy will probably boost employees’ well-being—though, of course, some will still wonder what they might have missed.

That said, the Daimler approach seems pretty extreme, and it deals with the symptoms rather than the root problem. In my experience, email stresses people out constantly, not just during vacations. We get too much email every day of the year; we spend too much time responding to it and worrying about it. Email correspondence in many corporations is so out of hand that it leaves almost no time for any actual work.

If the bosses at Daimler really care about their employees’ welfare, why not tackle the inefficiencies of this communication channel—and work to reduce their overall email load? How about announcing that no email is allowed between 9 and 11 a.m. and again between 1 and 3 p.m.? Or what if they limited people to just 10 emails a day? (Does anyone really have more than 10 important things to say in a day?)

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Dear Dan,

I’ve read a lot about the placebo effect. Does that mean it won’t work on me?

—Marco

It turns out that placebos operate to some degree outside of our awareness—which means that even when we know a particular medication is a placebo, we can still benefit from it. So don’t worry about knowing too much. Just take two placebos and call me in the morning.

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See the original article in the Wall Street Journal here.

November 5, 2014 BY danariely

Here’s my Q&A column from the WSJ this week  and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com.

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Dear Dan,
 
I went to brush my teeth this morning and found that I had to carefully, meticulously roll the tube from the bottom up before it would yield enough toothpaste. I wound up squeezing the tube so hard that my hands hurt and that I briefly considered buying one of those “toothpaste squeezers” you can find online. As I finally brushed, it occurred to me that my frugality behaviors are terribly inconsistent: I did whatever I could to squeeze as much toothpaste as possible from the tube, not daring to waste a gram of a cheap product—but as I continued with my grooming ritual, I wasted water, soap and many other scarcer, pricier products. 
 
Why is my frugality so inconsistent? And why is there a market for some frugality products, such as those toothpaste squeezers, but not others?
 
—Darin
 
I stopped aiming for consistency a long time ago, and I suggest that you also drop it as a standard for behavior. 
 
Consistency aside, your toothpaste behavior suggests how important attention is to our decision making.  At any moment, we could, in principle, carefully consider all our potential courses of action and all the ways we could save money and time.  But we don’t. We tend to consider only things that are front and center, and thus these aspects of life wind up driving our behavior. This is why, for example, people sometimes drive far out of their way to fill up their car with cheaper gas—wasting time and increasing the wear and tear on their car just to see the number on the pump drop a bit. 
 
More generally, all this implies that if we want people to waste less, we should make the waste clear, salient and visible. Perhaps we could position electrical meters at the center of our kitchens, add a water-measurement device to every faucet or equip cars to measure their total driving cost. And if we really want people to pay attention to these measures, maybe these numbers should be automatically posted to Facebook and Twitter.   

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Dear Dan,
 
Many years ago, I was badly burned, and since then, I carry many visible scars. Recently, at a Halloween party, somebody pointed to the scars on my face and told me what a wonderful costume I had. I tried to correct her and explained that I was really very badly burned, but she burst out laughing.
 
At this point, I had two choices: make her feel guilty or let it go. What should I have done? I must admit that it colored the Halloween party for me, and I no longer felt like I belonged.
 
—Dan (Ariely)
 
 
You should have let it go. The person pointing out your scars clearly had only good intentions, and trying to correct her once was sufficient. This was probably one of hundreds of comments that she made during the party, and while her remark was central for you, if you asked her in 48 hours about her memories from the party, she probably wouldn’t even remember you, your scars or her comment. You had already stopped enjoying the party after her comment; my guess is that having made her feel bad about her remark would only have intensified your negative feelings.
 
P.S. One more lesson from this unfortunate episode: Sometimes, putting yourself in the position of an external advisor and asking yourself what advice you’d give to someone else in the same situation can be a useful way to reason more calmly and make better decisions. Good luck using this approach next time.

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See the original article in the Wall Street Journal here.

October 25, 2014 BY danariely

Here’s my Q&A column from the WSJ this week  and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com.

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Dear Dan,

I’m about to buy a new laptop—definitely a larger than usual purchase for me. I’ve found that when the base item is expensive, I’m much more likely to indulge in complementary ones, such as a new laptop case or software that I don’t really need but would be fun to play with. Why is it that I think twice about buying good beer on a night out but have no problem spending another $60 on a computer mouse I don’t need?

— Andrew

Here’s another example to help think through your question. Imagine that you’re going to buy a new car for $30,000, and the salesperson tells you that you can get leather seats for $2,000 more. How expensive would those luxurious seats seem to you? And how likely would you be to go for the upgrade?

Now imagine that instead of going to buy a car, you’re buying a new chair for your home office, at a cost of $500—and the furniture store tells you that you can get the chair in leather for $2,000 more. How likely would you be to go for it?

Most people would feel much better about the car upgrade than the chair upgrade. That’s because we think about money in relative terms: Relative to $30,000, that $2,000 doesn’t look that bad, but the same amount feels outrageous relative to $500.

Of course, money isn’t relative, and we should think about it in absolute terms, but this isn’t the natural way we make financial decisions. All this doesn’t make your tendency to shop for items you don’t need after a large purchases any more rational—but it should remind you that it’s very human.

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Dear Dan,

My husband is incapable of admitting that he is wrong, and it’s driving me crazy. What can I do to get him to acknowledge it when he’s wrong?

— Lisa

I suspect that many of the times that you most want your husband to admit that he’s wrong occur in large and central debates—which could be a mistake on your part.

One of the main problems with admitting error is reputation. Your husband may think that if he admits once that he was wrong, it will indicate that he could be wrong in other cases as well. If this is the case, a better way to fight his denial of wrongness will be to try to get him to admit once to a trivial mistake, maybe even in front of other people—and then hope that with that first step out of the way, the path to admitting other blunders will be more open.

Or here’s a less ambitious approach: give up on having him admit error and focus on just having him say that he’s wrong. For many years, psychologists used to recommend that married couples engage in something called “active listening”—telling the other person that we feel their pain and asking them to describe their annoyance in vivid color and detail. But psychologists have figured out that active listening was actually not very good advice. As it turns out, simply saying “Yes dear” is a much better strategy for a happy marriage. If your husband believes in science, perhaps sharing this sage advice with him will convince him that, despite his difficulty admitting that he’s wrong, agreement is often the best approach.

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Dear Dan,

When are people most productive? In the morning? At night? Are different people more productive at different times of day?

— Jacob

No question about it: For all kinds of people, the most productive time is tomorrow.

See the original article in the Wall Street Journal here.

October 24, 2014 BY danariely

mbay

Transformers 4 grossed $1 billion dollars worldwide. Now, it’s out on Blu-Ray to add to that total. This has left many wondering what South Park creators Trey Parker and Matt Stone once famously pondered: “Why does Michael Bay get to keep on making movies” when his movies seem so terrible?

Well, modern consumer scientific research finally has an answer to this puzzle, and the answer isn’t just our poor taste in movies. We love seeing Michael Bay movies, because even if we don’t like the movies, we get to feel the “joy of judging.” This joy explains a lot of the modern entertainment economy, from watching reality TV to live tweeting the MTV Music Video Awards—two other examples where people tune into content they somewhat hate but love to somewhat hate.

With Bay’s movies, we enjoy the process of making snarky comments as we watch, searching for plot holes, and talking about how he is doing wrong by the source material. The movie could be bad, but the time we spend in the theater with the movie is fun.

From Hollywood movies to Harvard research, the idea that consumers crave engagement not just quality in their entertainment is becoming apparent.

The joy of judging and engagement gears into overdrive with Bay movies, as these pleasures are maximized when we feel some mastery and identity in the area. This is what makes Michael Bay’s movies so magnetic even if they also seem sort of repulsive; he consistently chooses topics that we have lots of knowledge of and that relate to our childhood identities (i.e., Transformers, Ninja Turtles).

We want to be a part of the community discussing these movies. So it does not matter whether Transformers 4 is good or not. We have to see it if we want to talk about the topic of Transformers.

Or consider The Amazing Spider-Man 2, a film that borrows heavily from the Michael Bay playbook of huge glossy visual imagery. That movie was not so good, was it? And comic fans knew that ahead of time. But did many of them still go? Absolutely. Why? Because the Spider-Man fans had to know whether the director got Spider-Man’s personality or the classic Gwen Stacy’s “arc” right.

Movies and television do not need to be good. The right type of movies and television are just a springboard for “second-level” enjoyment through Twitter, blogs and conversations.

So why does Michael Bay get to keep on making movies? Because bashing Bay is fun. While it might be tempting to feel bad for Bay, it’s worth remembering that all this Bay bashing means over $5 billion in box office total alone for the director. So good or bad, the movies are profitable and that’s what the movie business is all about.


Troy Campbell is an experimental researcher of consumer enjoyment and identity at Duke University and the Center for Advanced Hindsight.

You may also like “Why Who Plays Batman Matters” and “The Power of Modern Stand Up Comedy” by Troy Campbell.

October 11, 2014 BY danariely

Here’s my Q&A column from the WSJ this week  and if you have any questions for me, you can tweet them to @danariely with the hashtag #askariely, post a comment on my Ask Ariely Facebook page, or email them to AskAriely@wsj.com.

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Dear Dan,

I’m a Swedish journalist working in New York City. I recently went for my annual dental checkup. I’d only ever had two cavities before, so I was shocked when the dentist told me I had nine. I don’t have U.S. dental insurance, so I chose to wait until my next visit home to get treated. To my surprise, my regular Swedish dentist found only two minor spots on my teeth and advised me to wait and see whether any problems developed. He also looked at my X-rays but didn’t find any cavities—let alone nine. 

How can two dentists disagree so much on the state of my teeth? 

—Linda

Clearly, your American dentist has much better vision.

Seriously, this is probably another example of a common problem in modern society: conflicts of interest. It is easy to chalk this confusion up to one bad apple of a dentist, but conflicts of interest are all around us, and they often change our view of the world.

As any sports fan will tell you, if a referee makes a call that goes against your team, you can’t help but see him as evil, blind, stupid, etc. The same goes for all kinds of motivations—including financial ones. Once we have a motivation for seeing reality in a self-interested way, we tend to do it—often without realizing that we are biased.

This is why Republicans and Democrats can see the same poverty and suggest such different policies for dealing with it. This is why Israelis and Palestinians can watch the same explosion and interpret it so utterly differently. And this is often why medical professionals who get paid by the procedure see the need for more procedures.

Understanding the prevalence of conflicts of interest probably won’t help us become more objective, bridge the political gap or bring peace to the Middle East. But it should often prod us to seek a disinterested second opinion.

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Dear Dan,

A new Android app called Burn Money lets users pick an animated replica of a bill from $1 to $100, pay for it with real money, then flick an animated lighter and watch the bill burn to electronic ashes. Users later receive a certificate they can post on their social media pages. And that’s it. 

What do you think?

—Emilia

Curious. Maybe people are using this app as a signaling device. Signaling is a way to communicate to ourselves and anyone watching who we are—and, often, who we want to be. For example, we can signal prosperity with the homes we buy, we can signal stylishness with the clothes we wear, and we can signal environmental concern with the hybrids we drive.

Similarly, letting people know you’ve been burning money (both virtual and real) could be an attempt to signal wealth—as if people are saying, both to themselves and to anyone watching, “Look at me: If I can burn money, doesn’t that show how wealthy and comfortable I am?”

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Dear Dan,

The U.S. Declaration of Independence gives us the right to pursue happiness. But is happiness really what we should aim for?

—Helen

Happiness is fine, but if I had to pick a mind-set to pursue, it would be pronoia—a state that is the opposite of paranoia. As I recently learned from Wharton professor Adam Grant, pronoia is the delusional belief that other people are plotting our well-being or saying nice things about us behind our backs. Now there is a wonderful way to experience life.

See the original article in the Wall Street Journal here.