Management, at its best, should make sure there is enough space, enough quiet, and enough ways to ensure privacy so that people can create their own sensible work space. Uniformity has no place in this view. You have to grin and bear it when people put up odd pictures or clutter their desks or move the furniture around or merge their offices. When they’ve got it just the way they want it, they’ll be able to put it out of their minds entirely and get on with the work.