“A mountain of recent data on open-plan offices from many different industries corroborates the results of the games. Open-plan offices have been found to reduce productivity and impair memory. They’re associated with high staff turnover. They make people sick, hostile, unmotivated, and insecure. Open-plan workers are more likely to suffer from high blood pressure and elevated stress levels and to get the flu; they argue more with their colleagues; they worry about coworkers eavesdropping on their phone calls and spying on their computer screens. They have fewer personal and confidential conversations with colleagues. They’re often subject to loud and uncontrollable noise, which raises heart rates; releases cortisol, the body’s fight-or-flight “stress” hormone; and makes people socially distant, quick to anger, aggressive, and slow to help others.”