I think how you attribute the surprise matters. The order of discoveries brought forth a conventional story that stood for a seemingly long time. Now that story

I think how you attribute the surprise matters. The order of discoveries brought forth a conventional story that stood for a seemingly long time. Now that story may need to be re-examined. There is a difference between the discovery & subsequent scientific reports and the story drawn from them. The story is less accurate, tends to be more romantic and gets the widest exposure. Even the scientists subscribe to one version or another because they are human. The likely change in the common story is the source of the surprise and excitement. This process guarantees that there will always be a surprise, and roughly speaking it will be directly proportional to how long the story has been in place and inversely proportional to the number of such competing stories.