Meditation as Displacement Return Technology: Default Mode Network Suppression, Present-Moment Anchoring, and the Trained Return to S⁰_mind

The default mode network is the neural substrate of mental displacement. The meditative ground state S⁰_mind is present-moment awareness. Meditation trains the return function R: faster detection of D(ξ_mind) onset, faster return. Long-term practice structurally remodels the brain toward S⁰_mind. Buddhist marks map exactly to displacement concepts; nibbana is Φ_mind bounded.