I am interested to hear your thoughts on this topic. What is mindfulness? And how does it apply to fully enlightened beings, arahants?
I have been struggling with this question for a while now. Of course I know the superficial answer: it is being aware of what you're aware of.
To me, phenomenologically, it seems that mindfulness is a kind of stability of the mind to rest or remain in the awareness that already is. It's like mindfulness is a shifting focal point within the field of view of awareness. Losing mindfulness corresponds to the focal point being outside the field of view. What does it mean to lose mindfulness? Can an arahant lose mindfulness?
There is a rather strong sense of self present when I am being mindful, like I am the one being mindful. Mindfulness also always seems to be catching up with whatever has been experienced. Implying some kind of duality. Does the concept of mindfulness even apply to the arahant?
PS excited to see a new, but non-corporate controlled, streamentry community!