When my mind is engaged in layers of introspection, the structure I embed my thoughts within can sometimes prove inadequate. This can catch me by surprise. I am focused on the content, not the container, but in the depths of the reflection, I discover that the content no longer fits within the container. I have to modify the latter to absorb the former. In such cases, I look for the most flexible container. This is how we developed the observation system. It provides maximum flexibility for capturing thoughts. It legitimizes chaos.