"Paradigms of Human Memory" is the twenty-first episode of the second season of the American comedy series . It is widely celebrated as a groundbreaking subversion of the "clip show" trope, where instead of reusing old footage to save money, the episode consists almost entirely of newly filmed "flashbacks" to adventures the audience has never seen. The Unseen Adventures
An adventure involving a standoff with drug runners. [S2E21] Paradigms of Human Memory
The group filling in for a glee club that died in a bus crash. "Paradigms of Human Memory" is the twenty-first episode
A sequence suggesting the group was briefly institutionalized. [S2E21] Paradigms of Human Memory