Research on more than 6,000 knowledge workers suggests that the most effective teams are defined less by office perks or work arrangements than by their ability to protect focused work. High-performing teams deliberately reduce interruptions through focus blocks, meeting-free periods, and systems that minimize constant messaging and check-ins. Rather than emphasizing constant interaction, the best workplaces recognize that collaboration depends on giving people the time and conditions to think deeply, solve problems independently, and contribute better ideas to the group.