Decision—thinking is not unlike poker—it often matters not only what you think, but also what others think you think what you think they think you think. The mental process(过程) is similar. Naturally, this card game has often been of considerable interest to people who are, by any standards, good thinkers.

    The great mathematician John von Neumann was one of the founders of game theory. In particular, he showed that all games fall into two classes; there are what he called games of 'perfect information', games like chess where the players can't hide anything or play tricks; they don't win by chance, but by means of logic and skills. Then there are games of 'imperfect information', like poker, in which it is impossible to know in advance that one course of action is better than another.

    One mistaken idea about business is that it can be treated as a game of perfect information. Quite the reverse Business, life itself are games which we must normally play with very imperfect information. Business decisions are often made with many unknown and unknowable factors(因素), best poker players. But few business people find it comfortable to admit that they are taking a chance, and many still prefer to believe that they are playing chess, not poker.

    Trapped under six stories of ruins after the Haiti earthquake leveled his hotel, Dan Woolley believed he was going to die. But rather than give in to despair, the film-maker spent 65 hours beneath the earth looking up ways t treat his injuries on his iPhone. He also wrote a moving diary for his family, thinking they would only read his last message of love and comfort after his death. Instead, he was pulled from the disaster after a week-and will soon be reunited with his family.

    Mr. Woolley had travelled from America to Haiti with his colleague David Hames. Both had been working for charity. He was in the entrance-hall when the earthquake struck and just had time to dive into a comer before the building fell. Buried under tons of ruins, the film-maker downloaded a first aid application to his iPhone. He used the light from the iPhone to show him his injuries and diagnosed it properly as a broken leg. Then, he used the instructions from the app to treat the serious bleeding. The app advised him not to go to sleep if he felt he was going into shock. The resourceful Mr. Woolley set his phone alarm to go off every 20 minutes to keep him awake. New technology has played a huge part.

Mr. Woolley used a small black notebook to write messages to his family. He had thought his relatives would read them after he was dead. “I was in a big accident. Don't be upset at God,” he wrote, “I'm still praying that God will get me out, but He may not. But He will always take care of you.”

    Mr. Woolley was eventually located by a French rescue team and removed to the U.S. where he was reunited with his wife. Speaking after being flown to Miami for surgery, he said, “Boy, I cried. I wanted to use that time to do everything I could for my family. If it could be just to leave some notes that would help them in life, I would do that.”

He is now looking forward to seeing his family.

    Differences are important and they should be respected. For example, many important people throughout history were considered different, such as Thomas Edison, Albert Einstein and Abraham Lincoln. They did great things, but some people thought they were strange because they had strong feelings about something. I can understand these people because I've been in that situation before many times.

    It all started in elementary school when I realized that I wasn't like everyone else. My mom says that I have a tendency to be obsessed(着迷)with certain subjects. Unfortunately, these subjects don't interest other kids of my age and they really don't interest my teachers. In fact, my kindergarten teacher said she would scream if I mentioned snakes or lizards one more time while she was teaching the days of the week. I would get into trouble for not paying attention and the teasing began.

    In the third grade, my teacher informed me that I have Asperger's Syndrome（症状）. I said, “So what? Do you know that Godzilla's suit weighs 188 pounds?”

    Later, I asked my mom, “What's Asperger's Syndrome? Am I gonna die?” She said that it's like having blinders on, and that I can only see one thing at a time, and that it's hard to focus on other things.

    People also make fun of me for knowing facts about volcanoes, whales, tornadoes and many other scientific things. My mom says that she has been able to answer many questions on Jeopardy! just by listening to what I have to say, but I've even been laughed at for being smart.

    Maybe someday I'll become a gene engineer and create the real Godzilla. I can dream, Can't I?

How to Survive Exam Stress

    Exam time is one of the most stressful in school, whether it is high school, college or graduate school. Even the best students feel the pressure. The first sign of a problem while preparing for an exam is worry{#blank#}1{#/blank#} If we can get rid of worries, or at least control them, then we're in a much better position to do well on our tests. Take the following steps to survive exam stress and increase your overall performance as a result.

    {#blank#}2{#/blank#}What causes you anxiety when you are studying? Too much noise? Then move to a quieter place. Delayed work? Catch up with your studies a couple nights before. That way you can save the final night before the exam to review and get a good night of sleep.

    The second way to deal with worry is to displace thoughts. Suppose you wake up at three in the morning and you're worried about an exam. What do you do?{#blank#}3{#/blank#} Doing something productive might allow you to sleep better when you finally do go back to bed.

    Another way to displace negative thoughts is to do something physically active. Work out. Take a quick walk or a nice run{#blank#}4{#/blank#}For example, I might worry about the exam having surprise questions that I'm not prepared to answer. But I can shove those thoughts aside by reminding myself that I've taken many exams and I've handled surprise questions before.

    The third option is to treat the symptoms. Keep things in perspective. Think of one final exam that causes you the most anxiety. Now think of the worst thing that could happen. If you've prepared, then likely the worst grade you could get is a C. And, if you've been applying what we've been talking about, then you'll likely to do no worse than a B. {#blank#}5{#/blank#}

A. How bad is that really?

B. The first is to delete the causes.

C. Another idea is to think positive thoughts.

D. Worry robs us of energy, focus and motivation.

E. How about getting up and studying for an hour?

F. What we should do is to think positively and get rid of it.

G. So just face the result bravely and make an effort to improve your grade.

    Nowadays six Amazon Scout delivery robots rolled out in a pilot program in Snohomish County, Wash. The robots carry meals, groceries and packages to homes and offices in this region just north of Seattle. They have appeared on the sidewalks of London, Beijing and other cities and communities worldwide. These machines must overcome pedestrian legs, naughty dogs and broken pavement, which raises some questions.

    These services are gaining attraction as a growing number of city residents expect immediate or scheduled delivery for just about everything. Between 2017 and 2018 online retail sales in the U.S. increased by 16 percent. On the final step of all these deliveries, called the last mile, humans on bicycles, motorized scooters (电动车) or large delivery trucks typically deliver packages. All the vehicles compete for space on busy urban streets. "Deliveries are trending upwards in all crowded city centers, and if city and state leaders don't start thinking about creative solutions like robot deliveries, we can expect even worse traffic jams," says Paul Mackie, director of a transportation policy research center in Arlington.

    A study by this center found 73 percent of delivery vehicles in Arlington were parked outside of authorized areas, often blocking bike lanes and crosswalks. By moving the last step of deliveries from the road to the sidewalk, cities could reduce traffic jams and solve the parking problem entirely, Mackie says.

    Companies such as Amazon are not developing this delivery technology simply to clear up urban traffic. Self-driving vehicles and sidewalk robots could cut down last-mile delivery costs in cities by as much as 40 percent, according to a 2018 report by a consultancy firm. A delivery robot can cost thousands of dollars to manufacture, and most currently require human management and conservation. But in the long run companies that use autonomous delivery vehicles in the next several years could end up saving billions of dollars, the report stated.

In life, once on a path, we tend to follow it, for better or worse. What's sad is that even if it's the latter, we often accept it anyway because we are so used to the way things are that we don't even recognize that they could be different. This is a phenomenon psychologist call functional fixedness.

This classic experiment will give you an idea of how it works and a sense of whether you may have fallen into the same trap: People are given a box of tacks (大头钉) and some matches and asked to find a way to attach a candle to a wall so that it burns properly.

Typically, the subjects try tacking the candle to the wall or lighting it to fix it with melted wax. The psychologists had, of course, arranged it so that neither of these obvious approaches would work. The tacks are too short, and the paraffin (石蜡) doesn't stick to the wall. So how can you complete the task? The successful technique is to use the tack box as a candle-holder. You empty it, tack it to the wall. and stand the candle inside it. To think of that, you have to look beyond the box's usual role as a receptacle just for tacks and re-imagine it serving an entirely new purpose. That is difficult because we all suffer to one degree or another from functional fixedness.

The inability to think in new ways affects people in every corner of society. The political theorist Hannah Arendt coined the phrase" frozen thoughts" to describe deeply held ideas that we no longer question but should. In Arendt's eyes, the self- content reliance on such accepted "truths" also made people blind to ideas that didn't fit their worldview, even when there was plenty of evidence for them.

Frozen thinking has nothing to do with intelligence. She said," It can be found in highly intelligent people."