After 11,000 years, what could possibly scare The Culture?

And I think that's what makes accession such a brilliant example of the concept. The culture is accustomed to being the civilization that has the answers.

In excession, we're witnessing a culture that has encountered an outside context problem. In inversions, we're witnessing an outside context problem from the other side. We are seeing a special circumstances operation from the perspective of the people being observed, being interfered with, the culture in this case is the outside context problem.