The author is horribly out of touch with the latest research regarding supposed multitasking. It is now known that multitasking is really primitive time-slicing, with each task receiving downgraded attention and resulting in a shoddy outcome. If the author believes that quality is generated from a constant head-bobbing between tasks rather than a continuous and solid focus on a single task, then he is just spouting the managerial shibboleths without really thinking.