Clutter is taking a toll on both morale and productivity. Teresa Amabile of Harvard Business School studied the daily routines of more than 230 people who work on projects that require creativity. As might have been expected, she found that their ability to think creatively fell markedly if their working days were punctuated with meetings. They did far better if left to focus on their projects without interruption for a large chunk of the day, and had to collaborate with no more than one colleague.

Decluttering the company [The Economist]