Tell it. In intensely focus-based knowledge work, the economics of human task switching - to borrow Joel Spolsky's term - is a formidable and intriguing scienc

Tell it. In intensely focus-based knowledge work, the economics of human task switching - to borrow Joel Spolsky's term - is a formidable and intriguing science that managers who look at time as an interchangeable commodity or a cluster of cells on a spreadsheet simply don't grasp.