The universe we live in is empty mainly in terms of matter density. The protons and neutrons that constitute matter are called baryons, and approximately one proton exists in a space of 19.8 square meters. However, when the universe expands rapidly, the cosmic background radiation, known as a photon, is produced, resulting in two billion more photons in a grain of light. Since this light is a microwave, which has low energy and a long wavelength, it cannot be seen by the human eye. Therefore, humans, who only perceive visible light, consider the universe and the night sky to be dark. If there were aliens capable of seeing microwaves, the universe would be shining very brightly. The truth is that nothing has changed, but if the standards shift, it’s an entirely different story. - Joseph’s “just my thoughts”
Famous for his book "The Gun, the Germs and Steel," the great scholar "Jared Diamond" speaks 13 foreign languages. Once he made the wrong decision to change his job. He wanted to leave the field of science behind and become a "simultaneous interpreter." In the United States, however, speaking 13 languages seemed competitive, but being able to speak many languages in other parts of the world could not be competitive. Before doing a preferred occupation or doing something better than others, you should calmly be able to figure out your field of action first. - Joseph’s "just my thoughts"