It means: the universe is infinite, and human understanding of everything in the universe is very small compared with the universe. As long as the universe is infinite, we humans still have many things we don't know, just as it is foolish to look at primitive people today. If mankind develops in the next 100, 1000, I believe it will be silly to see us then, and so on. It will be like this for thousands of years, so as long as there is no end to time, there will always be a lot of unknown knowledge and exploration, such as Columbus' discovery of the new world, Newton's apple and so on. As long as the universe is infinite, human beings have many blind spots, so the relative stupidity of human beings exists o(∩_∩)o ... Haha! ! ! !