I was in the middle of coding a web page when my wife emailed me these questions: Ever wonder what it would be like to have the face, the brains, the personality and the body? What it would be like to have everyone stop when you walk in a room? What it would be like to be able to get anything or anyone you want? I stopped for a moment and thought about it because my wife wouldn't email me this unless something had driven her to do so. I emailed her back with what I thought was a pretty good answer. Here is what I wrote her back.

    Yes, I had thought many times about what it would be like to be one of the beautiful people. To be able to take your breath away when I walked into a room, or to be the life of the party and have everyone fawning (奉承) over me as I wore only the finest clothes and sported the perfect body? But then I always came back to the realization that a lifestyle like that is so fragile. As you get older, your body changes; as you get older, the money changes. Your body never looks the same, the clothes become more and more expensive to maintain. And once you have crossed the line, suddenly you are out. The next fresh face comes in and you are quickly forgotten.

    All through growing up I was never an attractive person. I was overweight and picked on. But that didn't stop me from being a nice person — a good, clean, funny and helpful person. I was the person who you came to when you needed a friend after a breakup. I was the one you came to when you needed a joke to brighten up your day. And in the long run, I will be the one you remember, not the new face, or the fresh style.

    In closing, I would like to say that we, as a people, have developed into looking (or things that are bigger and better instead of what will last. I don't know about you, but I will remember the friend who helped me when I was down, more than the hot girl I just saw walking down the street.

    I wish I could teach the world some more jokes.

    Sharon, Aged 22

    The most important thing to keep in mind when going into high school is to be yourself. Besides, I don't know what your middle school was like, but high school teachers will not care about things such as how much homework you already have in one night. It's best to just learn to deal with things and manage your time wisely so you can achieve everything you need to.

    Frank, Aged 21

    I think almost every kid feels both nervous and excited before their first day. You will probably love it. I know I did. You should join some sports or activities that will make your high school experience more enjoyable. Good luck!

    Eddie, Aged 20

    When I started high school I was really nervous too, especially since I had been homeschooled （自主学习，在家教育）all through middle school and didn't really know anyone. I suppose the best advice would be to just relax. The first couple of days can be a little bit hard, but things will become easier before you know it.

    David, Aged 19

    I'm not going to lie. The first day is kind of frightening(令人恐惧的). But you'll get used to it. Don't be afraid of anyone; upperclassmen（高年级学生） will pick on（招惹） you more if you let them know you're afraid. Just take it easy. Making some friends and staying with them will greatly help you get used to high school quickly. After the first week it's really not bad at all. Don't worry.

    Reading may be fundamental, but how the brain gives meaning to letters on a page has been a mystery. Two new studies fill in some details on how the brains of efficient readers handle words. One of the studies, published in the April 30 Neuron, suggests that a visual-processing area of the brain recognizes common words as whole units. Another study, published online April 27 in PLOSONE, makes it known that the brain operates two fast parallel systems for reading, linking visual recognition of words to speech.

    Maximilian Riesenhuber, a neuroscientist at Georgetown University in Washington, D.C., wanted to know whether the brain reads words letter by letter or recognizes words as whole objects. He and his colleagues showed sets of real words or nonsense(无意义的词语)words to volunteers undergoing fMRI scans. The words differed in only one letter, such as “farm” and “form” or “soat” and “poat”, or were completely different, such as “farm” and “coat” or “poat” and “hime”. The researchers were particularly interested in what happens in the visual word form area, or VWFA, an area on the left side of the brain just behind the ear that is involved in recognizing words.

    Riesenhuber and his colleagues found that neurons(神经元)in the VWFA respond strongly to changes in real words. Changing “farm” to “form”, for example, produced as great a change in activity as changing “farm” to” coat”, the team reports in Neuron. The area responded slowly to single-letter changes in made-up words.

    The data suggests that readers grasp real words as whole objects, rather than focusing on letters or letter combinations. And as a reader's exposure to a word increases, the brain comes to recognize the shape of the word. Meaning is passed on after recognition in the brain, Riesenhuber says.

    The researchers don't yet know how longer and less familiar words are recognized, or if the brain can be trained to recognize nonsense words as a unit.

    My six-year-old son, Stephen, was in front of the TV and smiled. His favorite show was about to begin-a Phoenix Suns basketball game.

    "Ladies and gentlemen," the announcer's voice was heard, "here is your starting lineup (首发阵容)." The arena (球场) darkened and the lights flashed when the players ran into the court to sing their team song. Stephen clapped and danced around. My wife Lorrie and I laughed. Stephen had been performing this for months. "One day I'm going to take you to a game, son," I promised.

    About a year later, the construction company where I worked finished a project for a Suns player. One afternoon my boss called me. "The player has two extra tickets for tonight's game! Just pick them up at my office," he said. I picked up the tickets, but felt a little disappointed when I looked at the clock. Even if I had had a helicopter, we would never have gone to the arena in time for the player introductions. Stephen would miss his favorite part! I grabbed my key, got Stephen in my car and hit the road. "Lord," I prayed, "I'd love to see the joy on Stephen's face. Help us make it on time."

    When I drove, it began to rain heavily. Suddenly, lightning flashed right near the arena! I turned on the radio to listen to the game. The announcer said there'd been a power failure at America West Arena. Everyone was fine, but there would be a delay until they got everything running. Finally, I parked the car and we walked in hurriedly to take our seats. I hoped that we hadn't missed the introductions.

    The very moment we entered the arena, the lights darkened. The music started. "Ladies and gentlemen, here's your starting lineup!" Stephen's eyes grew wide. There wasn't enough space for him to dance around, but I could tell that his heart was leaping more than his body was able to. Thank heaven, he hadn't missed a thing. And neither had I.

    If you live in Shanghai, you might have to take a "lesson" in sorting garbage, as the city recently introduced new garbage-sorting regulations. It's now required that people should sort garbage into four categories, namely recyclable, harmful, dry and wet waste. However, if people fail to sort their garbage properly, they can be fined up to 200 yuan. More cities are introducing similar regulations, following the practice in Shanghai. By the end of 2020, garbage-sorting systems will have been built in 46 major Chinese cities, including Beijing and Shenzhen, reported People's Daily.

    According to a study by the Policy Research Center for Environment and Economy, under the Ministry of Ecology and Environment, over 90 percent of the public believe that garbage sorting is important for the protection of the environment. However, garbage sorting is still a big problem in China. Only 30 percent of participants said they think they are adequately sorting their trash, the study noted.

    According to Xinhua News Agency, it's partly because many people lack the willingness to sort their own waste. In the past, some previous garbage regulations didn't give clear fines for people who failed to sort garbage. "It's a must to have a legal guarantee to promote garbage sorting." Liu Jianguo, a professor from Tsinghua University, told China Daily. He also added "the importance of the new regulations in Shanghai is to change the past voluntary action into compulsory action for everyone"

    Aside from China, many other foreign countries have also introduced garbage-sorting regulations. In Japan, waste sorting has become a basic survival skill, reported Xinhua. There is a fixed time for disposal of each kind of garbage and littering can result in high fines and even jail time. In Germany too, people are asked to sort waste into specific categories, reported HuffPost. For example, in Berlin, people have yellow bins for plastic and metals and blue bins for paper and cardboard.

Gottfried Wilhelm von Liebniz was a philosopher and mathematician in search of a model. In the late 1600s Leibniz decided there was a need for a new, purer arithmetic than our common decimal (十进制) system. He got his inspiration from the 5000-year-old book that is at the heart of Chinese philosophy: the I-Ching, or Book of Changes.

This ancient text was such an influence on Liebniz that he titled his article on the new arithmetic "Explanation of a new arithmetic and the ancient Chinese figure of Fu X". Fu Xi was the legendary first author of the I-Ching. The arithmetic that Liebniz described was binary (二进制) code, which is used in almost every modern computer, from iPhones to China's own Tihane-2 supercomputer.

To figure out what Liebniz learned in the I-Ching, we need to understand something that most of us have taken for granted. When we listen to an MP3, look at a digital photo or watch the latest TV drama, we are experiencing a digital representation of reality. That representation is basically just a string of binary signals that are commonly known as 1s and 0s. What Liebniz's gained from the book was that even the most complex reality could be represented in the binary form as 1s and 0s.

In the philosophy of the I-Ching, reality is not entirely real. It is something more like a dream. This dream of reality arises from the binaries of Yin and Yang, as they play out countless combinations, practically everything in the universe. It's not surprising then, from the l-Ching's perspective, that anything in the dream of reality can be represented in a string of 1s and 0s, processed by a computer.

The I-Ching was far more ambitious than the current practical applications of binary code. It is claimed that the I-Ching represents nothing less than the basic situation of human life itself. As a system for predicting the future, the I-Ching might disappoint, but as a way of questioning your own unconscious mind, it can be remarkably useful.

The I-Ching's teachings also contain warnings about our digital revolution. Binary code, powered by modern computers, has an amazing capacity to represent reality. However, the ancient authors of the I-Ching might have understood its potential-and its dangers-even better than we now do.

So when scientific thinkers ask whether computers can create "virtual realities" or "artificial intelligence", they are missing the point. Of course, we can create ever deeper and more complex layers of the dream of reality. The real question is, can we wake up from the dream we're in already?