Power of subtraction―Kyoko

The team of Virginia university announced the theory that people put too much importance on adding and ignore subtraction in the English scientific journal Nature.

For example, there is a case that one pillar supports a plate. When people are asked to make the plate stable, they put three more pillars at the corner. However, when you want to make it stable, you can take a pillar away. Then the plate is placed on the ground and stays there in the most stable way.

As other cases, when asked to improve an essay, most people try to make the essay longer. When asked to review a recipe, they add more ingredients. Sometimes you get negative outcomes by adding.

When we get sick, we immediately rely on medicine. I think that also comes from the idea of adding. We have to notice that adding is not the only way to solve the problem. Maybe there are a lot of waste and useless things around us.

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Electric Vehicles - Kyoko

Electric Vehicles seem as an ideal technology as they do not produce CO₂.  Major countries like Japan are going to ban selling brand new gas-driven cars. Will EVs become a savior or become irrelevant?

EVs power the motor by electricity so they do not emit CO₂, which makes people believe that EVs are clean. A car manufacture Mazda cooperated with Mr. Inaba who is a professor at an engineering university. They found that EVs emit more than twice as much as CO₂ as gas-driven vehicles throughout the manufacturing process.

Mr. Fujimori of Kyoto university simulated the effects of CO₂ emission after all countries adopt EVs 100 % in 2050. The amount of CO₂ will not change or might increase under the current situation that relies on thermal power generation for energy.

He suggests that the decarbonization effects by introducing EVs will not increase unless CO₂ emission is reduced during the manufacture of EV batteries. A thorough analysis from all aspects is necessary. I think EVs are a mirror as to how seriously each country thinks and tackles the environmental issue.

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Can you wait? - Kyoko

‘Coupang‘, a major Korean online shopping company is growing rapidly. It has its own delivery network and can deliver goods in 24 hours, having 15 million customers. Due to their success, the support of Soft Bank Group is big.

On the other hand, a rival　’Naver‘ is working with a major logistic company to strengthen their delivery service. In Korean online shopping, it was common to deliver in 2 or 3 days. Coupang has caught the hearts of Korean customers who are reluctant to wait and has acquired customers of up to 30 % of the Korean population.

However, due to the increase of work, the deaths of employees at distribution centers from overwork has been announced, which has become a social problem.

In Japan, overworking of drivers under their tight schedules is also a serious problem. I think we are getting more and more intolerable. When I say “Wait”, my dog can wait a lot before eating food. Why can’t we do what dogs can do? Humans may be more impatient than dogs.

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