The senior leader who says “we built careers by being in the building” is telling the truth about their own career and generalizing it carelessly. By the time the office became memorable, they had an assistant, a door, and colleagues who competed to be interrupted by them. The junior version of that same office, two hours of commuting wrapped around a day of being visible to someone else's anxiety, is the thing their children are declining. An honest audit of what the office did and did not deliver is now possible, because for the first time the question has been run as experiments rather than as memory.
What wasn't lost
Start with the fear underneath the nostalgia: that without co-presence, work degrades. The cleanest test to date is Bloom, Han and Liang's randomized trial at Trip.com, published in Nature: 1,612 university-educated employees randomly assigned to hybrid (two days home) or full-office. Hybrid cut voluntary quits by a third, from 7.2 to 4.8 percent, with no detectable difference in performance reviews or promotions across two years. The managers in the study who predicted remote days would hurt productivity reversed their view by the end. Meanwhile the supposed stampede back is smaller than the headlines: in a Stanford/Atlanta Fed survey of over 1,000 executives in early 2025, only 12 percent of those with hybrid or remote workers planned any return-to-office mandate in the following year.
So the core nostalgic claim, that presence was load-bearing for output, fails its clinical trial. Supervision by line-of-sight turns out to have been a comfort for the supervisor, not a production input.
What was actually lost
The audit is not one-sided, and the losses deserve precision rather than hand-waving. The earliest randomized evidence, Bloom's 2015 Ctrip study of fully remote call-center work, found a 13 percent performance gain but also something darker: promotion rates, conditional on performance, fell for the people at home. Out of sight was not out of output, but it was out of mind. That is a real cost, and it lands hardest on exactly the people the office veterans say they worry about, the young, who need to be seen learning.
The same study contains the repair kit, though. When Ctrip extended the choice to everyone and let people re-choose, performance gains nearly doubled to 22 percent. The variable was never home versus office. It was imposed versus chosen. Which reframes the mentorship problem: the fix for invisibility is not compulsory presence for all, but deliberately designed visibility, chosen overlap, and managers evaluated on developing people they cannot see from their desk.
Mandates, the blunt tool, have their own measured price. Studying return-to-office orders at Microsoft, SpaceX and Apple through 260 million résumés, Ding and Ma found the mandates drove out senior employees disproportionately, with the effect scaling with strictness, up to 15 percent of the seniority distribution shifting downward at the strictest firm, and the leavers going mostly to large direct competitors. The policy sold as protecting apprenticeship expelled the masters.
The 1985 control group
For anyone who suspects this all became possible only with laptops, Semco ran the essential experiment forty years ago, on a factory floor. In 1985 its plant workers began setting their own hours. Management predicted the assembly line would collapse, since a line needs everyone present together. As Ricardo Semler has told it, the workers coordinated it themselves; parents of school-age children took mornings, single people took evenings, and the entire coordination policy was to talk to the person next to you. The line ran. His summary: adults do this.
The story matters because it removes technology from the argument. The office question was never really about buildings or bandwidth. It was about whether coordination must be imposed from above or can be composed from below by people who understand the dependencies better than their supervisors do. That question had an answer before email.
Running the audit at the dinner table
A senior leader can offer the next generation something better than either nostalgia or surrender: the distinction between the office's functions and its rituals. The functions, being seen while learning, absorbing standards by proximity, the fast feedback of a room, are real, and a young person who ignores them will pay the Ctrip promotion penalty in some form. The rituals, presence as loyalty, hours as devotion, the commute as tribute, were always costume.
The useful sentence is not “we had it right” or “you have it right.” It is: here is what the building was secretly doing for me, now go get that, wherever you work.
Sources
- Bloom, N., Han, R. & Liang, J., Nature (2024). Hybrid working from home improves retention without damaging performance. RCT, 1,612 employees: quits fell by a third (7.2%→4.8%) with no performance or promotion penalty over two years. https://www.nature.com/articles/s41586-024-07500-2
- Bloom, N., Liang, J., Roberts, J. & Ying, Z., Quarterly Journal of Economics (2015). Does Working from Home Work? Full WFH raised performance 13% but lowered promotion rates conditional on performance; with choice, gains nearly doubled to 22%. https://academic.oup.com/qje/article-abstract/130/1/165/2337855
- Stanford Report / SWAA (2025). Return to office? Not everybody is doing it. Only 12% of surveyed executives with hybrid/remote staff planned an RTO mandate within 12 months. https://news.stanford.edu/stories/2025/03/return-to-office-not-everybody-is-doing-it
- Ding, Y. & Ma, S., arXiv 2405.04352 (2024). Return-to-Office Mandates and Brain Drain. RTO mandates at Microsoft, SpaceX, Apple caused disproportionate senior departures, scaling with mandate strictness (up to 15% at SpaceX). https://arxiv.org/pdf/2405.04352