The Reflections page in this demonstration is constructed as a Blog page. Think of this as a Journal. It will normally show your most recent posts in chronological order.
It is important to note that you can choose whether to make each entry public or private. The best portfolio users will have reflections posted publicly which may describe how their skills are developing, and other private entries which that contain more personal reflections. The author can see all entries, but the public can only see the ones with that privacy setting.