The " no wisdom in the world " mentioned in the ancient think tank meant that human wisdom had been exhausted and could no longer create more knowledge or solve problems. Today, we can understand it as: in today's society, there is no wisdom and knowledge left, and it is difficult to find new knowledge and solutions to problems. This sentence may imply that the technological development of modern society has reached a bottleneck, and we may no longer be able to create new things as we did in the past. It could also mean that we're already stuck in problems that we can't solve and that we need to find other ways to solve them. Of course, the specific meaning and explanation of this sentence would vary according to time and situation.