Second‑Brain as Cognitive Infrastructure

Personal knowledge‑management systems (notes, linked archives, indexed media—what Tiago Forte calls a 'second brain') are becoming de facto cognitive infrastructure that extends human memory and combinatory capacity. Widespread adoption will change who is creative (favoring those who curate and connect external stores), reshape education toward external‑memory literacy, and create inequality if access and skill in managing external knowledge are uneven. — Treating 'second brains' as public‑scale cognitive infrastructure reframes debates about schooling, workplace credentials, platform design, and digital equity.