Two empirical puzzles have resisted adequate theoretical explanation. First, why do minor triggers produce catastrophic psychological reactions disproportionate to their apparent magnitude? Second, why does chronic rage—now widespread across digital and polarized populations—so rarely produce violent action? This paper proposes that both puzzles share a structural explanation. Psychological deterioration operates not as a sequence of discrete stages but as a dynamic pressure system in which stages activate sequentially but accumulate concurrently, with inter-chamber reinforcement creating compounding effects that exceed simple addition. We term this framework the Uncertainty–Narrative–Fear–Isolation–Rage–Extremism (UNFIRE) model. Disproportional reactions are explained by total system load: minor triggers land on a fully pressurized multi-chamber system, producing responses proportional to accumulated pressure rather than trigger magnitude. Two individuals at the same apparent clinical stage may carry dramatically different total system pressure—and face dramatically different risk. The second puzzle is explained by the Critical Convergence Threshold (CCT): transition from chronic rage to action requires three factors to converge simultaneously—narrative totalization, complete hopelessness, and an authorization mechanism we term the Logic Gate. Each is necessary; none is sufficient alone. The mathematical consequence of requiring all three to align across nine sequential substages produces a structurally predicted low completion rate (illustrative example: 0.7 ≈ 4%), consistent with available clinical prevalence data (Asnis et al.,⁹ 1997; Swanson et al., 1990). Gender disparities in completed violence—men at 3–4× women's rate despite comparable rage states—provide population-level evidence that totalization and hopelessness, not validation access, are the rate-limiting factors. Extremism is designated E* to reflect its status as an emergent attractor state rather than a guaranteed pathway stage. The model is presented as a theoretical framework awaiting empirical validation and generates falsifiable predictions at physiological, psychological, and population levels. The full theoretical treatment is provided in the companion monograph (Howell, forthcoming).