True happiness is such a rare commodity(有价值之物)that the whole of the world is continuously seeking it and failing to find it. Why is happiness such an elusive(难捉摸的) thing? Is it that it cannot simply be achieved? Or is it that it is not where all of us have been looking for it?

    What is it that we consider happiness? This is how I see it: Happiness is what you feel when what you want to happen happens. And the then we can conclude that unhappiness is what we feel when what we want to happen does not happen.

    The main keyword in definition is "want". The whole trouble starts when we want something. Every moment of our lives we keep on wanting something or the other. Only a small percentage of all our wishes is fulfilled in spite of all our endeavors(努力). The frustration of failing to fulfill most of our wishes sets in. We start feeling weighed down. Desire is a seed which grows fruits of unhappiness. Actually the trouble is that we demand too much. The only solution to this problem is to break out of this cycle of desires and struggles.

    Actually, happiness and unhappiness are two sides of the same coin. The desire for happiness is like asking only for the light and not for darkness. But there is not much difference between light and darkness. It is matter of degree only.

    If we think deeper, we will realize that it is this pain of failure, pain of frustrated desires which is of greater significance to us. It is actually like good health. One can only define health as an absence of diseases. In order to have good health we strive to avoid diseases. You cannot purchase or achieve good health directly. You have to take steps which keep your body free of diseases. Then only the organs of body keep functioning properly and you experience good health. Similarly, when one destroys the root cause of unhappiness, the problems are over. And the root cause of all our unhappiness is DESIRE.

    Early people lived by hunting animals and gathering grains. After a tribe(部落） had lived in an area for some time, its food supply would begin to reduce. Then the tribe had to move to new hunting grounds where there was more food.

    This way of life caused special problems for the tribes. They were forced to depend on luck, as well as on their hunting skills. If they could find no game, the whole tribe was in danger of starving. And when the hunters had good luck one day, they were not sure to find game the next time. The tribes moves often because much land was needed to support their people.

    Finally, people learned that they could grow their food. At first, the women of tribes raised patches of wild grain. Later, people discovered that they could plant their own seeds. Farming slowly became a way of life.

    As people turned away from hunting to farming, their life changed. When the food supply became more constant, they no longer moved from place to place. The success of their crops depended partly on the weather, but there were also things they could do to help crops grow.

    In the past, a tribe had to travel many miles for food. Now , only a small amount of land was necessary to feed the whole tribe. The tribe could grow in size because farming provided a way to feed people.

    Born and raised in a digital age, today's young people are generally tech savvy (技术娴熟的). But when it comes to basic life skills, they're less capable than the older generation.

    According to a recent study, 69 percent of 18 to 24-year-olds in the UK have no idea how to bleed a radiator(暖气片换水). About 35 percent of them don't know how to sew on a button, while about 11 percent don't understand how to change a light bulb or iron clothes.

    It appears young people are losing the skills older generations took for granted. In fact, the problem is shared by young people in the United States. According to a report by Forbes in 2014, most millennial (千禧一代) drivers don't know how to check their tire pressure. Cooking is another basic life skill that has been dropped, as millennials are much more likely to order food deliveries than previous generations.

    Technology may be to blame for this generational gap. Skills at using phones and computers are the ones valued these days, and the practical skills are now seen as functions that can be easily outsourced (外包). Indeed, improvements in technology have made young people unfamiliar with many basic life skills. For example, with GPS always at hand, young people have had no need to learn how to read physical maps.

    However, this change has raised concerns among many people. “If you have your master's degree and you can't live within your means or go home from your job and feed yourself a nutritious (有营养的) meal, you're not a complete graduate,” Chris Moore, a professor from Brigham Young University, US, told Huff Post.

    That's why there's an increasing call for the return of “home ec” in the US, short for home economics, which teaches basic life skills like cooking and how to do laundry. It was very popular in the early 20th century, but was later taken out of schools and universities because of budget(预算) cuts. But recently, home ec was reintroduced in a small number of schools and universities.

    “The educational system would work better if every academic class had a practical course that applied the theory to do something regular people do in real life,” Robert Frost, instructor and flight controller at NASA, wrote on Quora, according to Huff post.

    Chicago is considering firm measures to prevent the Asian carp, a giant fish native to the Far East, from coming into North America's Great Lakes in large numbers. Such a move could cost up to$18bn, a heavy economic burden to the city.

    This species, more than a metre in length, was originally introduced to southern US states three decades ago to control weeds in sewage (污水) treatment plants. But they escaped into the Mississippi River and increased in number quickly, making their way north towards the Great Lakes and threatening the native fish species along the way.

    "Dozens of them will often leap out of the water as boats approach." Michael Beecham, a local environmental expert, described how frightening the scene was. "I've gone down the river and seen these fish jump up and hit me in the face. It is a big problem for our native species." he said.

    A meeting has been organized to find a technological solution to the carp problem, one of which involves blocking parts of Chicago's canal system. Listening at the meeting was John Goss, who was worried about the effect that having barriers in the canal system would have on industry. "It would certainly increase the cost of transportation," he told. "It is currently very cheap and efficient to bring materials and finished goods down the Chicago ship canal.''

    Another cheaper option is to eat the fish out of existence. Dirk Fucik is selling carp burger(鲤鱼汉堡包) at his fish shop not far from downtown Chicago. He thinks the carps are a great resource. "To catch it and throw it away is a waste," he says. "Eating them helps solve the problem and also provides jobs." But the idea has not yet caught on. So far, he is the only person in Chicago selling carp burgers.

    Several Jobs That Will Be Automated By Artificial Intelligence(AI) And Robots

Translator

    Image recognition software and voice recognition software are bringing some major advances to language translation. Applications like Google's Word Lens can translate words from signs and documents in real time and there are a lot of translation apps that allow you to type in a word or phrase and will translate it for you.

    Some will even speak the phrase for you and raw word-to-word translation will be fully automated soon.

    Fast food workers

    Automated ordering booths have already made their way into a few McDonald's restaurants around the world, and cooking positions could be removed next. The booths probably can't handle customer service problems well, so televideo systems could bring in an office employee to deal with complaints.

    Field technician

    New advances in the Internet of Things could make this work obsolete.

    Low-cost sensors combined with high availability cellular／satellite communications and cloud technology are being started to automate and alarm these sites, and can be checked and maintained from a desktop or mobile device.

    Sales representative

    But, e-commerce is changing how we make purchasing decisions, especially those where there isn't much differentiation among the major competitors.

    If you're selling a high-differentiation product and／or a high-price, low-volume product you have some job security, but if you're selling a high-volume, low-differentiation product, you better start polishing your resume, said Doug Camplejohn, CEO of Fliptop. “These kind of product sales are all moving online.”

    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.

    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.