The article discusses the concept of the 'Cognitive Dark Forest', where the internet has become a place where sharing ideas and innovations can be detrimental to one's own success, as large corporations and AI platforms can absorb and exploit them. This is compared to the 'Dark Forest' theory from Liu Cixin's science fiction novel, where civilizations in the universe remain silent to avoid being detected and destroyed by other civilizations. The article argues that the rise of AI and platform control is ending the era of open innovation. The author suggests that the safest bet is to stay silent and not share ideas, but this would lead to a decline in human knowledge and innovation.