While most of us are happy to take the credit when things go well, few of us are willing to take the blame when things go wrong. Rather than trying to hide our shame or embarrassment, experts found that we are simply less aware when our actions result in a negative outcome.

       The research may explain why we often feel it hard to take the blame for our actions. “Our result suggests that people may really experience less responsibility for negative than for positive outcomes，” said Patrick Haggard, leading researcher and professor of the institute of Cognitive Neuroscience at University College London.

      In a series of tests, participants were asked to press a key. A sound then followed, either disapproving, neutral or approving, and they were then asked to estimate the time between the action and when they had heard the sound.

      Researchers found that individuals experienced different levels of responsibility depending on the outcomes. They also discovered they were significantly slower to recognize if their actions had resulted in a bad consequence, compared to when they had done well.

   “Effectively, we have found that we experience a negative outcome differently, not just retell it differently. We make a weaker connection when there is a bad result. And respond much more strongly when something good happens，” said Professor Haggard. When something goes right, everyone wants to take the credit, and when things go wrong, nobody is interested in putting their hands up.

        The researchers say our brain is “very much concerned” with reward, as good results are key to survival. Although our own perception (认知) of whether we are guilty of something or not is changed by the outcomes, this does not provide a defense if we have done something wrong. “Our experience of our own responsibilities can be misleading and can be strongly colored by the outcomes of our actions，” said Professor Haggard. “We have to take responsibility for what we actually do, not just for how we experience things.”

    Lots of people buy books and products from Amazon, an online seller. They offer and pay over the Internet and the books are shipped through the mail or a delivery service like FedEx.

    One day, people could get their Amazon deliveries from an “unmanned aerial vehicle”—a timely vehicle that looks like a toy helicopter. And instead of waiting days to get the parcel, it could be at the buyer's home in half an hour or less. The company is working on a fleet of tiny vehicles they call “Prime Air”. The vehicles are also known as “octocopters”. On their website, Amazon says, “One day, Prime Air Vehicles will be as normal as seeing a mail trucks on the road today.”

    The U.S.'s Federal Aviation Administration (FAA) is working on safety regulations for unmanned flying vehicles like the Prime Air copters. Those regulations will make sure the copters are able to fly safely where they need to go. Once the FAA has put its rules in place, which could be as early as 2016, Amazon will be ready with its fleet of tiny flyers. The process could take as many as five years.

    The new delivery service would likely be available only in the United States, at first. The copters the company is testing now can handle packages up to five pounds (2.3kg) and they have a range of 10 miles (16 kilometers).

    Other companies are also looking at using unmanned flying vehicles to deliver their products. For instance, Domino's Pizza in the U.K. released a video showing a “DomiCopter”, delivering a pizza. That video may have been a publicity stunt（噱头）. In any case, just like Prime Air's octocopters, the DomiCopters don't have clearance（许可）to take off just yet.

    Do you have trouble trying to create the next big idea? Sometimes the answer isn't to just force an idea out of your mind. Instead, you might want to try sitting back, relaxing and letting your mind wander. Yes, you heard that correctly. If you are in need of a new idea, try daydreaming.

    Researchers from the university of California, Santa Barbara, found an association between daydreaming and creative problem-solving. Their study includes having participants first do an "unusual-use task". They had to try to come up with as many different ways to use an object as they could.

    Then, the participants chose to do one of the following four things before doing the "unusual-use task" again: complete a difficult task; complete an easy task; take a 12-minute break; or skip the 12-minute break and move right on to the task exercise again.

    Surprisingly, the group that performed best was the one that completed the easy task. Many participants reported that they were daydreaming while performing the easy task. So the researchers believed that this daydreaming might have helped unlock their creativity.

    But how could daydreaming help the brain come up with creative ways? The answer is something known as "unconscious thought". Even when you are not actively working to solve a problem, it is still in the back of your mind. Your brain is still thinking about the problem, but in a much more subtle (不易察觉的) way.

    When you daydream, your mind is allowed to think in ways it normally would not. Because it is free of control, it can create completely new and out-of-the-box ideas.

    Great ideas never come easily, but that does not mean you always have to work hard to get them. Feel free to do what you want and let your mind wander.

    It's said that you don't know a man until you walk a mile in his shoes. And you also don't know what it's like for older people to travel until you accompany one on a trip.

    After flying with my elderly father from Washington, D.C. to L.A. in July, I began to realize that a companion has important tasks that can make a journey easier for older people. I booked nonstop tickets on JetBlue to avoid tiring, confusing connections, and we flew directly into small, manageable Long Beach Airport. Even though my father could walk, I arranged with the airline for wheelchair assistance, which meant we got on board first.

    When I took him back to the airport for his return flight to Washington, I got permission from JetBlue to wait with him at the gate instead of saying goodbye at the security checkpoint. I wished he'd had a first-class seat and access to a comfortable airline club. Better yet, I wish I had flown with him both ways. As I watched the attendant wheel him to the lift that took him from the tarmac（飞机跑道）to the plane, I felt like an anxious mom sending her child to school for the first time.

    Things can go awry on a plane trip. And then there is the horrifying story about Joe and Margie. When they landed at Dallas-Fort Worth International Airport, a wheelchair attendant met them to help with a connection. But somehow Margie, who had Alzheimer's disease, disappeared.

    I didn't need to worry about my father wandering away; at 82, his mind was sharper than mine. But his hearing was poor, so I worried about what would happen if he missed an important announcement. Fortunately, everything went just fine. Careful planning made the trip successful.

    Next time I travel with a senior, I'll know better. I hope there will be a next time.

    We lived in a quiet neighborhood. One evening I heard a loud crash. Earlier my wife had asked me to the store for soft drinks. My teenage daughter Holly practiced her driving, so I sent her to the store in my truck.

    At dinner my son talked about how much he liked my truck. I enjoyed having it, but I said: "My heart is not set on that truck. I like it but it is just metal and won't last forever. Never set your heart on anything that won't last. "

    After hearing the loud noise, the whole family ran outside. My son shouted: "Holly crashed your truck."

    The accident took place in my own driveway. Holly had crashed my truck into our other vehicle(交通工具), the family van. In her inexperience, she had confused the brake(刹车) and the gas pedal(油门). Holly was unhurt physically, but she was crying, "Dad, I'm sorry. I know how much you love this truck." I held her in my arms as she cried.

    I still remembered how sad Holly was the night she crashed our truck, and how I comforted her. When Holly thinks back on her life, I want her to know that I love her a thousand times more than any piece of property(财产).

    I repaired the van, but the dent(凹痕) in my truck is still there today. Every day it reminds me of what really matters in my life.