**Fragmentation as Infrastructure: Schooling, Cognitive Vulnerability, and the Escalation of the Attention Economy**

This paper examines how cognitive vulnerability to digital platforms emerges not from technology itself but from the upstream structure of mass schooling. It argues that conventional education systems rely on “externally paced schedules, frequent task-switching, and segmented learning cycles,” which over time condition attentional patterns toward fragmentation. The paper defines fragmentation as “high-frequency externally imposed task-switching combined with limited opportunity for sustained, self-directed cognitive engagement,” and proposes that these conditions shape baseline attentional tendencies across developmental years. The analysis extends beyond schooling to show how social media and artificial intelligence inherit and accelerate these pre‑existing cognitive patterns. As the paper states, “social media does not introduce a new cognitive condition but amplifies an existing one.” It further demonstrates that access to low‑fragmentation learning environments—such as Montessori—is unevenly distributed, making “cognitive continuity a class-distributed resource.” The paper concludes by identifying a governance misalignment: regulatory efforts focus on downstream digital behaviors rather than the upstream infrastructures that produce vulnerability.