Despite the warning from the Vulture this morning, shares of Box, the massively money-losing tech company that went public this morning, have been popping all day. By this afternoon they were up about 70 percent from the listing price.

Sheryl Sandberg didn't need to write an updated version of Protestant Ethic and the Spirit of Capitalism about leaning in to the end of weekends. Tech workers have already internalized that message that there should be no distinction between work and life. Rather, spiritual fulfillment lies in "peak productivity."