Four years ago, we asked ourselves: what if we could create a shopping experience with no waiting in lines and no checkout? Or could we create a physical store where customers could simply take what they want and go? Our answer to those questions is Amazon Go, where you could experience the idea of “just walk out shopping”.

Amazon Go is a new kind of store with no checkout required. We created the world’s most advanced shopping technology, so you never have to wait in line. With our “just walk out shopping” experience, simply use the Amazon Go app to enter the store, take the products you want, and go! No lines, no checkout.

Our checkout-free shopping experience is made possible by the same types of technologies used in self-driving cars: computer vision, sensor fusion, and deep learning. Our “just walk out technology” automatically detects when products are taken from or returned to the shelves and keeps track of them in your virtual cart. When you’re done shopping, you can just leave the store. Shortly after, we’ll charge your Amazon account and send you a receipt.

We offer delicious ready-to-eat breakfast, lunch, dinner, and snack options made fresh every day by our on-site chefs and favorite local kitchens and bakeries. Our selection of foodstuff ranges from bread and milk to cheeses and locally made chocolates. You’ll find well-known brands we love, plus special finds we’re excited to introduce to customers. For a quick home-cooked dinner, pick up one of our chef-designed Amazon Meal Kits, and you can make a meal for two in about 30 minutes.

Our 1,800-square-foot shopping space is conveniently compact(紧凑的), so busy customers can get in and out fast. It is located at 2131, 7th Ave,Seattle,WA, on the corner of 7th Avenue and Blanchard Street. All you need is an Amazon account, a supported smartphone, and the free Amazon Go app.

Amazon Go is currently only open to Amazon employees in our testing program, and will be open to the public soon.

I was never very neat, while my roommate Kate was extremely organized. Each of her objects had its place, but mine always hid somewhere. She even labeled (贴标签) everything. I always looked for everything. Over time, Kate got neater and I got messier. She would push my dirty clothing over, and I would lay my books on her tidy desk. We both got tired of each other.

War broke out one evening. Kate came into the room. Soon, I heard her screaming, “Take your shoes away! Why under my bed!” Deafened, I saw my shoes flying at me. I jumped to my feet and started yelling. She yelled back louder.

The room was filled with anger. We could not have stayed together for a single minute but for a phone call. Kate answered it. From her end of the conversation, I could tell right away her grandma was seriously ill. When she hung up, she quickly crawled (爬) under her covers, sobbing. Obviously, that was something she should not go through alone. All of a sudden, a warm feeling of sympathy rose up in my heart.

Slowly, I collected the pencils, took back the books, made my bed, cleaned the socks and swept the floor, even on her side. I got so into my work that I even didn’t notice Kate had sat up. She was watching, her tears dried and her expression one of disbelief. Then, she reached out her hands to grasp mine. I looked up into her eyes. She smiled at me, ‘Thanks.’

Kate and I stayed roommates for the rest of the year. We didn’t always agree, but we learned the key to living together: giving in, cleaning up and holding on.

Suppose you’re in a rush, feeling tired, not paying attention to your screen, and you send an email that could get you in trouble.

Realization will probably set in seconds after you’ve clicked “send”. You freeze in horrors and burn with shame.

What to do? Here are four common email accidents, and how to recover.

Clicking “send” too soon

Don’t waste your time trying to find out if the receivers have read it yet. Write another email as swiftly as you can and send it with a brief explaining that this is the correct version and the previous version should be ignored.

Writing the wrong time

The sooner you notice, the better. Respond quickly and briefly, apologizing for your mistake. Keep the tone measured: don’t handle it too lightly, as people can be offended(冒犯), especially if your error suggests a misunderstanding of their culture(I.e. incorrect ordering of Chinese names).

Clicking “reply all” unintentionally(无意)

You accidentally reveal(透露)to the entire company what menu choices you would prefer at the staff Christmas dinner, or what holiday you’d like to take. In this case, the best solution is to send a quick, light-hearted apology to explain your awkwardness. But it can quickly rise to something worse, when everyone starts hitting “reply all” to join in a long and unpleasant conversation. In this instance, step away from your keyboard to allow everyone to calm down.

Sending an offensive(冒犯的) message to its subject

The most awkward email mistake is usually committed(犯) in anger. You write an unkind message about someone, intending to send it to a friend, but accidentally send it to the person you’re discussing. In that case, ask to speak in person as soon as possible and say sorry. Explain your frustrations calmly and sensibly—see it as an opportunity to clear up any difficulties you may have with this person.

During the Second World War, I met a housewifefromChicago who told me how she discovered for herself that “the cure for worry is to get completely occupied doing something constructive.” I met this woman and her husband in the diningcarwhile I was traveling from New York to my farm in Missouri.

This couple told me that their son had joined the armed forces the day after Pearl Harbour. The woman told me that she had almost ruined her health worrying over that only son. Where was he? Was he safe? Or in action? Would he be wounded? Killed?

When I askedherhow she overcame her worry,she replied: “I got busy." She told me that at first she had dismissed her maid and tried to keep busy by doing all her housework herself. But thatdidnˈt help much. “The trouble was,” she said, “that I could do my housework almost mechanically. So I kept on worrying. While making the beds and washing the dishes, I realized I needed some new kind of work that would keep me busy both mentally and physically. So I took ajobas a saleswoman in a store.”

“Thatdidit,” she said. “I immediately found myself in a lot of activities: customers crowding around me, asking for prices, sizes, colors. Never a second tothinkof anything except my immediate duty; And when night came, I could think of nothing except getting off my aching feet. As soon as Iatedinner，I fell into bed and instantly(immediately)became unconscious. I had neither the time nor the energy to worry.”