What did he mean by a think tank?

A virtual think tank was usually a group of highly intelligent and knowledgeable people in a fictional world. These members were usually given important tasks and decision-making rights. Their wisdom and opinions were believed to have a critical impact on the development and outcome of the story. In novels, the virtual think tank often appeared in the decision-making of various characters to provide various analysis and suggestions to help the protagonist solve problems and make the right decisions. The members of these think tanks could be scientists, politicians, historians, artists, etc. Their professional knowledge and insights were usually very unique and creative, adding a lot of imagination and depth to the story. A virtual think tank could be a real character or a fictional character. The meaning and function of its existence depended on the background and plot of the novel.