Makers and Managers think differently about time. Let's think about how their work differs and why time takes on unique characteristics for each.
Paul Graham has pointed out that makers work with their chosen material in indeterminate spans while managers work with people, usually delegating, in appointment sized chunks. He goes on to explain that when a manager sees a maker has all morning "free" they might be foolishly inclined to schedule a mid-morning meeting to discuss productivity. See Maker's Schedule
As entrepreneurial ventures have come to define creativity and billionaire founders are judged to be the best we find return on investment to be a stand in for any less quantitative measure of good. See Infected with ROI
We recognize computer programming as a sometimes creative activity that also has a lot of skilled tasks that can be completed one after another in a tempo that has been compared to knitting. We worry that managers come to rely on this tempo and make commitments that are threatened by Tempo Interruptions and thus creative work discouraged.