Fun historical parallel: In 1588, Agostino Ramelli designed a mechanical "bookwheel" - basically a rotating desk that let you keep multiple books open and switch between them without getting up. It's literally the physical ancestor of browser tabs. Same problem (context switching between multiple sources), different tech stack. The engineering is wild - it used a geared mechanism to keep each book level as the wheel rotated. Medieval devs solving UX problems 400+ years before Chrome ate all your RAM.