1 . Quantum ( 量子 ) computers have been on my mind a lot lately. A friend has been sending me articles on how quantum computers might help solve some of the biggest challenges we face as humans. I’ve also had exchanges with two quantum-computing experts. One is computer scientist Chris Johnson who I see as someone who helps keep the field honest. The other is physicist Philip Taylor.

For decades, quantum computing has been little more than a laboratory curiosity. Now, big tech companies have invested in quantum computing, as have many smaller ones. According to Business Weekly, quantum machines could help us “cure cancer, and even take steps to turn climate change in the opposite direction.” This is the sort of hype ( 炒作 ) that annoys Johnson. He worries that researchers are making promises they can’t keep. “What’s new,” Johnson wrote, “is that millions of dollars are now potentially available to quantum computing researchers.”

As quantum computing attracts more attention and funding, researchers may mislead investors, journalists, the public and, worst of all, themselves about their work’s potential. If researchers can’t keep their promises, excitement might give way to doubt, disappointment and anger, Johnson warns. Lots of other technologies have gone through stages of excitement. But something about quantum computing makes it especially prone to hype, Johnson suggests, perhaps because “‘quantum’ stands for something cool you shouldn’t be able to understand.” And that brings me back to Taylor, who suggested that I read his book Q for Quantum.

After I read the book, Taylor patiently answered my questions about it. He also answered my questions about PyQuantum, the firm he co-founded in 2016. Taylor shares Johnson’s concerns about hype, but he says those concerns do not apply to PyQuantum.

The company, he says, is closer than any other firm “by a very large margin ( 幅度 )” to building a “useful” quantum computer, one that “solves an impactful problem that we would not have been able to solve otherwise.” He adds, “People will naturally discount my opinions, but I have spent a lot of time quantitatively comparing what we are doing with others.”

Could PyQuantum really be leading all the competition “by a wide margin”, as Taylor claims? I don’t know. I’m certainly not going to advise my friend or anyone else to invest in quantum computers. But I trust Taylor, just as I trust Johnson.

3 . Conflict (冲突) between teenagers and parents happens for a lot of reasons. Sometimes conflict happens between teenagers and parents just because conflict happens between human beings anyway. Humans have different needs, different feelings, different opinions about what they want, and the relationship with people can be really difficult. However, teenagers can cause further conflict because of the hormonal (生理的) changes that are happening and the stage of life that they're in.

Teenagers and parents have different understanding about rules and at times they find it difficult to look into the future. So parents and teenagers will often experience conflict about many things, do chores, homework, whether teenagers speak respectfully or not and about what they're allowed to do.

Before we think about rule boundaries (界线) for teenagers, we need to make sure that we have a really good relationship base. There's no point saying “From now on, you have to listen to me”: if you don't have a positive relationship with your teenager. We need to go back and make sure there is some degree of shared respect, and some degree of positive communication and enjoyment being together. you do that first, it means that rule boundaries are a lot easier to set up.

Often we're dealing with conflict on the fly. This is not the right time to be dealing with it. We really want parents and teenagers to sit down and think about the kinds of things that may happen in the house before the problems come. The more detailed your rule boundaries are for teenagers, the more likely it is that they are going to follow them. So this means we don't have rule boundaries like “Have the bathroom cleaned”. It needs to be “The floors mopped, nothing on the countertop and the mirrors cleaned by ten o'clock every Saturday”: Rule boundaries need to be written down, and set out ahead of time so the teenager knows exactly what's expected.

4 . Lonely? You’re hardly alone. That’s the finding of a new study. And that appears throughout industrial nations across the globe. The study linked rising loneliness to a greater use of smartphones and the internet over the same years.

Jean Twenge, a psychologist, took part in the study. Her team has found that since 2012, US teens have been spending less time together face-to-face.

“Smartphones can help keep us connected with friends,” says Twenge. “But they can also make people feel excluded (隔离).” Girls, especially, may feel this way. One reason may be that they like to post more photos and selfies (自拍) than boys. Studies have shown that if those images don’t get a lot of “likes”, it can affect a teen’s mental health.

And there’s “phubbing” a mixture of “phone” and “snubbing (冷落)”. It’s that moment in which a friend or family member takes out a phone and keeps looking at it, paying no attention to everybody else, including you. Phubbing is one way technology can affect you, even when you’re not the one using it.

The new study pulled its data from a survey. Some 1 million 15- and 16-year-old students from 37 countries took this survey in 2000, 2003, 2012, 2015 and 2018. Its questions mostly dealt with education. But they also included six statements about loneliness, such as “I feel awkward and out of place in my school”. Students could strongly disagree, disagree, agree or strongly agree with each statement.

If technology causes loneliness, should we stop using it? “No, not at all,” argues Twenge. “Everybody of all ages is trying to figure out how we can best use these technologies and stay mentally healthy.” Her advice is to “use your smartphone for what it’s good for. Then put it away.” That includes putting it away overnight—ideally in another room.

7 . It happens in every disaster (灾难): For those in need, people often donate (捐赠) things that turn out to be more of a trouble.

Juanita Rilling remembers it happened in 1988 when she was a disaster expert trying to help people suffering from a hurricane (飓风) in Honduras. “One morning I received a call from one of our logistic operators (物流运营商), and he explained to me that there was a plane carrying medical supplies that needed to land,” says Rilling. “But the ground was full, with lots of donations that no one had required. The plane—full of needed supplies—had to find someplace else to go. And it ended up stopping everyone’s plans by about 48 hours, which is important time in a disaster.”

Rilling now runs the Center for International Disaster Information, which is trying to make sure things like that don’t happen again. So when Superstorm Sandy hit, Rilling’s group started a project to encourage money donation. “Even a small donation can make a big difference and can quickly become exactly what people affected by a disaster need most,” Rilling says. But despite this, donators do that over and over. About 60% of the things donated after a disaster couldn’t be used. Often it’s old clothing or food.

Meghan Hara, who deals with kind donations for the American Red Cross, says she knows that some people are careful with giving money. And she doesn’t think that the need to give something concrete (实物) should be completely stopped.

“Part of what people are doing is that they’re helping, and they’re trying to help. What we need to work out is how to effectively deal with that,” Hara says.

8 . What your dinner photos on Instagram say about you

Posting pictures on Instagram is a modern day version of writing a journal: It’s all about creating a connection between ourselves, our lives, friends, family and the wider public.     1     Each day, at least 95 million posts are shared on Instagram.

    2     Some people will post photos of their pets, their holidays or their social life — but in recent years, posting photos of the food that we eat conveys to the viewer something more than the food itself.

If someone posts photos of a meal that they have just cooked, the message they’re trying to convey is that they are a capable person. For example, if someone is on a health kick, they often seek social approval. If they’ve made a really healthy meal, they will typically post it with hashtags “#” like diet or health, which tie into other people’s experiences.     3    

There is also a growing trend of people taking photos of their food when they dine out at a restaurant.     4     These Instagrammers often tag places that are considered selective or to have a certain clientele (顾客群) , like celebrities — to indicate that they’re a person of worth. It feeds into their need for social approval and is a way of boosting their own self-esteem.

If people are on a diet or trying to eat a bit better, they can use platforms like Instagram to track what they’ve been eating. It’s a way of motivating other people as well as holding themselves responsible, while subconsciously saying “    5    ”. Sharing the diet is a way of both getting attention and taking responsibility from a wider audience.