The arhat views mental events and material objects and begins to see them as momentary and atomistic happenings. Thus he discovers that there is no permanent substance or solid thing as such. This approach errs in conceptualizing the existence of entities relative to each other
Trungpa’s Madhyamika critique identifies the arhat’s perception of impermanence as philosophically incomplete, still entangled in a conceptual atomism that perpetuates subtle forms of dualistic thinking.
, Cutting Through Spiritual Materialism, 1973thesis