In 1973, my high school, Acton-Boxborough Regional, in Acton, Massachusetts, moved to a sprawling brick building at the foot of a hill. Inspired by architectural trends of the preceding decade, the classrooms in one of its wings didn’t have doors.
https://www.newyorker.com/business/currency/the-open-office-trap
origin - https://www.pipiscrew.com/2020/08/the-open-office-trap/ the-open-office-trap