Concentration can be explored as a function of mind, as an essential and distinct part of the path of liberation and as a "felt experience" in this very moment. Each exploration deepens understanding and empowers concentration.
Since the Greeks, Heraclitus-flow and change but Parmenides' view won out: THINGS, matter, stuff, leads to power OVER.
But systems view more modern-energy/mind flows, information flows more important view.
