This document discusses the ongoing tension in office design between collaboration and individual focus or concentration. It has become more challenging with modern remote and mobile workforces. The document explores solutions some companies have implemented like Uber's "work caves" that provide solitary spaces without closing doors, and open offices separated from private meeting rooms and intermediate zones created by permeable aluminum louvers. The tension is not new, as a book from 1902 discussed employers seeing offices as machines for control, but modern solutions aim to balance individual and group work needs.