In the process of meditation, concentration initially brings a particular object into focus, allowing for clarity and enhanced awareness. Once this focus is established, mindfulness takes over to closely observe the object, leading to a deeper understanding of its nature and qualities.
As one continues this practice of observation, investigation reveals that the object is not static; rather, it is in a state of constant flux. This realization highlights the inherent qualities of unsatisfactoriness and selflessness, leading to a profound understanding of the transient nature of all things.