Quiet time would be a designated part of the day in which engineers could work alone, confident that they would not be interrupted—because everyone else would be doing quiet work, too. The rest of the day would be available for “everything else.” Quiet time was set three days a week, from morning until noon. The engineers loved it. Some reported that their productivity had increased by as much as 65 percent.
Margaret Heffernan: Beyond Measure: The Big Impact of Small Changes