Many times, when we enjoy the happiness brought to us by science and technology, literature, and art from foreign countries, we will sincerely sigh, "Science has no borders." Or "Art has no borders." Remember Yang When the United States was suppressing Huawei, Mr. Wang once said on a certain occasion that "technology has no borders." At that time, there was a lot of denunciation on the Internet, accusing him of being a traitor, lacking political awareness, and so on. In fact, is it wrong to say that science knows no borders? I think it's actually not wrong. But, is he wrong in saying this? It must be wrong. This seems a bit contradictory, but it starts with the characteristics of science and technology. The reason why science has no borders is because science is the laws of nature, or the wisdom created by human beings based on their understanding of the laws of nature. As long as humans master the weapon of science and use it to benefit and help humans, then science itself It has no borders and is a good friend of mankind, regardless of nationality, color, or race. For example, today, whether it is American scientists, Chinese scientists, British scientists or scientists from other countries, they have invented a vaccine to treat COVID-19. , and then use it to prevent epidemics for people all over the world, then science itself is borderless anyway. However, what we cannot ignore is that science does not travel around or report to a certain place by itself. It is in the hands of specific people, and the people who master it are diverse. If those who master advanced science and technology are pure scientists who do not care about their nationality and regard people all over the world as their compatriots, then this science and technology has no borders. But in reality, in most cases, science has national boundaries, because those who master science and technology have nationalities, and may also have their own political opinions and their own parties. This is why during World War II , the United States used nuclear weapons, but Germany and Japan could not. Therefore, in daily life, it is very naive and stupid to use a simple sentence: science has no borders. If science really had no borders, there would be no First and Second World Wars, and there would be no various struggles in the world, especially in the current situation, where anti-globalization forces dominate power and In the context of the right to speak, it is very naive to simply emphasize that science has no borders. Therefore, when we talk in daily life, we must not only look at the target, but also the background of the times and the goals we want to achieve.