Many years ago, when I was fresh out of school and working in Denver, I was driving to my parents' home in Missouri for Christmas. I stopped at a gas station about 50 miles from Oklahoma City, where I was planning to stop and visit a friend. While I was standing in line at the cash register (收款台), I said hello to an older couple who were also paying for gas.

    I took off, but had gone only a few miles when black smoke poured from the back of my car. I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend's. We chatted on the way into the city, and when I got out of the car, the husband gave me his business card.

    I wrote him and his wife a thank­you note for helping me. Soon afterward, I received a Christmas present from them. Their note that came with it said that helping me had made their holidays meaningful.

    Years later, I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I'd left the lights on all day, and the battery (电池) was dead. Then I noticed that the Friendly Ford dealership—a shop selling cars—was right next door. I walked over and found two salesmen in the showroom.

    “Just how friendly is Friendly Ford?” I asked and explained my trouble. They quickly drove a pickup truck to my car and started it. They would accept no payment, so when I got home, I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you, and it meant a lot, he said.

    “Thank you” — two powerful words. They're easy to say and mean so much.

    When school started on that warm August day, I threw myself into everything I did, including playing volleyball. I decided to become beautiful, or at the very least, skinny. I stopped eating completely. Soon I began losing weight, which thrilled me, and I even grew to love the tiredness and lightheadedness( 头晕)that came with my poor diet, for those feelings meant that I was winning.

    As the season progressed, things had become tense between my head volleyball coach, Coach Smith, and me. She felt that something was wrong with my health. She talked with me about my eating and was angry that I wouldn't listen to her when she tried to make me eat. She tried to persuade me in a determined way and so we fought constantly. Then my hunger started to affect my performance. I was so tired that practice and games were becoming a struggle. One afternoon, with hurt in her eyes, Coach Smith asked me what I had eaten and I told her nothing yet. She looked at me, disappointment in her eyes, knowing she couldn't make me stop, and walked away.

    A couple of weeks later I attended a formal dinner for our volleyball team. I stood there as my coach managed to say something nice about me. I realized then that I had ruined my senior year by being disrespectful, and I had probably ruined hers as well. So that evening I wrote her a letter apologizing and thanking her.

    Then one Saturday, as I was reading in the library, I felt someone gently take my arm and say softly, “Lynn Jones, how are you doing?” I looked up and saw the familiar face. “Thanks for the letter,” she said. “It meant a lot.” When I think of a coach, I think of someone above me, someone who gives instruction — not a friend. But Coach Smith is different, and, like any other good friend, she dealt with my problem in a determined way even when I hated her for it at that time. I didn't deserve her kindness, but she gave it anyway. I will forever be grateful for her help, and now for her friendship.

    Microsoft has developed a new smart phone app that interprets eye signals and translates them into letters, allowing people with motor neurone disease to communicate with others from a phone.

    The GazeSpeak app combines a smartphone's camera with artificial intelligence to recognize eye movements in real time and convert(改变) them into letters, words and sentences.

    For people suffering from ALS（渐冻症）, also known as motor neurone disease, eye movement can be the only way they are able to communicate.

    “Current eye-tracking input systems for people with ALS or other motor impairments are expensive, not robust under sunlight, and require frequent re-calibration and substantial, relatively immobile setups,” said Xiaoyi Zhang, a researcher at Microsoft who developed the technology.

    “To mitigate the drawbacks…we created GazeSpeak, an eye-gesture communication system that runs on a smartphone, and is designed to be low-cost, robust, portable and easy to learn.”

    The app is used by the listener by pointing their smartphone at the speaker. A chart that can be stuck to the back of the smartphone is then used by the speaker to determine which eye movements to make in order to communicate.

    The sticker shows four grids(方格) of letters, which each correspond to a different eye movement. By looking up, down, left or right, the speaker selects which grids the letters they want belong to. The artificial intelligence algorithm（程序） is then able to predict the word or sentence they are trying to say.

    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.

    Researchers at the University of Chicago have trained an artificial intelligence system, to write fake reviews on Yelp, a website showing customers reviews on shopping or something else, and it's pretty hard to tell them apart from a human review.

    Their study, which will be presented at the ACM Conference on Computer and Communications Security in October, aimed to throw attention onto how easily these systems can write reviews like humans and how damaging they can become if they're not monitored properly.

    Since many small businesses rely on online reviews to help grow and keep their reputation, a future where someone—like a rival or angry customer—could crazily fill their page with negative reviews written by a machine is pretty worrying.

    And, according to the research team, the threat goes far beyond a bunch of fake reviews on Yelp. "In general the threat is bigger," Ben Y. Zhao, one of the authors of the study, said. "I think the threat towards society is large and it really misleads users and shakes our belief in what is real and what is not. I think that's going to be even unimaginable."

    To test how believable these reviews came across, the researchers invited 40 volunteers and had AI generate five fake reviews for 40 actual restaurants. The volunteers were asked how useful they thought the review was and whether or not they thought it was fake. The AI reviews ranked as "effectively indistinguishable" from real reviews，according to the study. Further, the fake reviews were given a 3.15 "usefulness" rating, compared to a 3.28 rating for human reviews.

    I love our kitchen. It's one of the most used parts of our home. About 9 years ago we updated our kitchen and got all new collections. At the time I didn't really do a lot of research on the functions of the equipment and I really wish I had. There were so many different choices on the market and I ended up buying some that I didn't really like all that much and now that it's time to update them again, I'll be more careful with the ones I choose.

    I've had my eye on KitchenAid for a while, especially the new KitchenAid equipment at BestBuy. The new KitchenAid equipment at Best Buy has a cook-like quality without the premium price that you might expect to pay, so it won't cost you a fortune. The equipment has a professionally inspired design that is a perfect balance of good taste and functionality.

    With the new KitchenAid equipment you will find cooking more optional and flexible, which contributes to your amazing performance while preparing a meal. Its five-door fridge offers organized storage and easier access to food.

    I love these new collections and I can't think of a better time to update your kitchen than right now, because when you buy now at Best Buy you will get 18 months financing or 5% rewards on major equipment and free delivery on purchases over $399. To learn more about how to transform your kitchen with the new KitchenAid collections, be sure to visit BestBuy.com.