In popular science texts, well-founded conjectures can help readers better understand the content of the article and better understand the author's intentions. This is because in popular science articles, authors often speculate on future trends or results based on known facts and data. This kind of educated speculation can help readers better understand the author's views and conclusions. Sentences with valid speculations can also help the reader think more deeply about the content of the article. By speculating about future trends or results, authors can guide readers to think about the future development of science and technology and social development, so that readers can better understand the impact of scientific and technological progress on society. In short, a well-founded speculation sentence can play an important role in popular science literature. Not only can it help readers better understand the content of the article, but it can also promote the reader's thinking and inquiry spirit.