What Would Need to Be True
1. The three "memory modification" traditions are addressing the same phenomenon (modifiable stored impressions from past experience) — empirically supported by reconsolidation theory + somatic encoding + yogic psychology
2. They operate at different depth levels, which explains the different timescales
3. The depth hierarchy is: autobiographical/emotional layer (fastest to modify) → somatic-autonomic layer (months-years) → impressional substrate (years-lifetimes)
4. AVERY's 4-day claim is therefore not false, but limited — it's modifying the top layer, not the deepest one; behavioral change is real but may not be durable under severe stress (which activates deeper layers)