A man once said how useless it was to put advertisements in the newspapers．“last week, ”said he, “my umbrella was stolen from a London church．As it was a present, I spent twice its worth in advertising, but didn't get it back．”

    “How did you write your advertisement?” asked one of the listeners, a merchant．

“Here it is,” said the man, taking out of his pocket a slip cut from a newspaper．The other man took it and read, “Lost from the City Church last Sunday evening, a black silk umbrella．The gentleman who finds it will receive ten shillings on leaving it at No.10 Broad Street．”

    “Now, ”Said the merchant, “I often advertise, and find that it pays me well ． But the way in which an advertisement is expressed is of extreme importance．Let us try for your umbrella again, and if it fails, I'll buy you a new one．”

The merchant then took a slip of paper out of his pocket and wrote：“If the man who was seen to take an umbrella from the City Church last Sunday evening doesn't wish to get into trouble, he will return the umbrella to No.10 Broad Street．He is well known．”

    This appeared in the paper, and on the following morning, the man was astonished when he opened the front door．In the doorway lay at least twelve umbrellas of all sizes and colors that had been thrown, and his own was among them．Many of them had notes fastened to them saying that they had been taken by mistake, and begging the loser not to say anything about the matter．

B

    I am Peter Hodes, a volunteer stem courier. Since March 2012, I've done 89 trips of those, 51 have been abroad, I have 42 hours to carry stem cells(干细胞) in my little box because I've got two ice packs and that's how long they last, in all, from the time the stem cells are harvested from a donor(捐献者) to the time they can be implanted in the patient, we've got 72 hours at most, So I am always conscious of time.

    I had one trip last year where I was caught by a hurricane in America. I picked up the stem cells in Providence, Rhode Island, and was meant to fly to Washington then back to London. But when I arrived at the check-in desk at Providence, the lady on the desk said: “Well, I'm really sorry, I've got some bad news for you-there are no fights from Washington.” So I took my box and put it on the desk and I said: “In this box are some stem cells that are urgently needed for a patient-please, please, you've got to get me back to the United Kingdom.” She just dropped everything. She arranged for a flight on a small plane to be held for mere-routed(改道) me through Newark and got me back to the UK even earlier than originally scheduled.

    For this courier job, you're consciously aware than that box you're got something that is potentially going to save somebody's life.

    Google's new artificial intelligence can defeat both humans and other AIs. Fortunately, the only war zone where it fights and wins is the ancient board game Go（围棋）.

    AlphaGo Zero, developed by Google-owned DeepMind, is the latest AI program. The original AlphaGo defeated Go master Lee Sedol last year, and AlphaGo Master, an updated version, went on to win 60 games against top human players. What's different about AlphaGo Zero is that it became potentially the world's best Go player without any help from humans.

    The program AlphaGo Zero started off knowing only the basic rules and then played millions of games against itself in just a few days. After almost five million games played against itself, AlphaGo Zero could outplay humans and the original AlphaGo. After 40 days, it was capable of beating AlphaGo Master.

The program learned the strategies humans accumulated over thousands of years in a matter weeks and also developed nontraditional strategies and moves that beat the techniques of the human masters, leaving them astonished. "At each stage of the game, it seems to gain a bit here and lose a bit there, but somehow it ends up slightly ahead, as if by magic," said Andrew Jackson of the American Go Association

    DeepMind says it has plans for the technology behind AlphaGo Zero beyond just defeating all over an ancient game board. "In the end, we want to apply these breakthroughs to helping solve all sorts of pressing real world problems like designing new materials," said Demis Hassabis, co-founder and CEO of DeepMind, in a statement.

    That sounds great, but just as a precaution, let's take the advice of Elon Musk and Stephen Hawking and keep any super-fast learning AI away from the nuclear launch codes for now.

    Women make better drivers than men for many reasons. Why is that? If you ask me, I'd like to say, men know that women are better drivers but do not have the courage to admit the truth—women are queens of the road.

    Unlike men, women stop for directions when they have no idea as to where they are going. We don't drive around for hours pointlessly wasting a tank of gas only to find ourselves heading in the wrong direction. Have you ever been in a car with a man who is lost? He tells you to shut up when you begin to open your mouth. And every five minutes or so he takes a turn going forty-five miles per hour only to find out he's made another wrong turn.

    Speeding is what men do best on the road. There is a reason why men get more speeding tickets than women. Not because we trick to get out of tickets but only because we don't get pulled over as frequently. We don't speed. We have more intelligence than senselessly to put our own lives as well as the lives of others in danger.

    My largest issue with male drivers is how a majority of them drive with one hand on the wheel and the other hand doing only God knows what. The seat is backed as far as possible, and they're totally lost into loud music beyond a necessary level. You don't ever see women driving like that.

    I feel that the above evidence more than proves my points that women are not only better drivers but also safer drivers than men. We women rule the road. Oh, and men, if you want to continue criticizing（批评）women for being bad drivers, bring it on.

    What's fiercer than a lion? The honey badger (蜜獾), one of the toughest mammals in Africa and western Asia. Honey badgers stand less than a foot high. They are only a couple feet long. They weigh just over 20 pounds. Yet they have a reputation for toughness that is far greater than their size.

    So what makes the honey badger so tough? They have speed, but so do many animals. They aren't stronger than lions, so how do they stop them? The thing that sets the honey badge apart is their skin. Their skin is thick and tough. Arrows, spears, and bites from other animals can rarely go through it. Not only is their skin thick and tough, it is also loose. This allows them to twist and turn to fight back while another animal is attacking them.

    Honey badgers have long, sharp claws. These claws are good for attacking and even better for digging. Honey badgers are some of nature's most skilled diggers. They can dig a nine-foot tunnel into hard ground in about 10 minutes. They love to catch a meal by digging up the holes of frogs and snakes. They also use their digging skills to create their homes. They live in small holes in the ground and defend them fiercely.

    You don't get a reputation like the honey badger by running from danger. The honey badger is a fearless and tireless fighter. They will attack any creature that threatens them, man included. Because of the honey badger's reputation, most predators (食肉动物) avoid them. Some animals use the honey badger's reputation to their advantage. Adult cheetahs (猎豹) have spotted coats, but their kittens have silver manes (鬃毛) and look like honey badgers. Some scientists believe that their coloring tricks predators into avoiding them.

    You might be wondering: "If honey badgers are so tough, how did they get a name that makes them sound like a piece of candy?" The answer makes sense. Since honey badgers have such thick skin, bees rarely harm them. So honey badgers love to attack beehives(蜂窝). Honey badgers run after honey so aggressively that beekeepers in Africa have to use electric fencing to hold them back. There's nothing sweet about that.

    One evening I was going back from a supermarket. As I was approaching my car, I noticed that some person came and stood beside me. He was the one that could be considered as a bum. It seemed that he had no car, no home and no job. I thought that he would ask me for money, but he did not do that, he only said: "Your car is very nice".

    After several moments of silence, I replied: "Thanks", and then the inner voice told me, "Ask him if he needs help". After a short hesitation I asked him if he needed any help. His response was astonishing. I will never forget those simple three words that I heard from him: —"Don't we all?"

    It was a true discovery to me. I needed help. Although I had money and a place to sleep, I recognized that I needed help too. Then I opened my wallet and gave him enough money to get a meal and some shelter for a day.

    Suddenly I understood that no matter how much money we have, we all need help. On the other hand, no matter how poor you are and how many material problems you have, you still might offer your help to others and you still might be giving. Even it's just a nice word, you can give that and it can be priceless to other persons.

    Maybe that man was just a homeless stranger, but to me he was more than that. Maybe he was sent by the Highest Loving Power personally to me to open my eyes and to show me that there is one thing, among all other values, which is very important and irreplaceable for each and every person. Actually, it is a true gift and it is called Giving.