The irony of multitasking is that it's exhausting: when...

The irony of multitasking is that it's exhausting: when you're doing two or three things simultaneously, you use more energy than the sum of energy required to do each task independently. You're also cheating yourself because your're not doing anything excellently. You're compromising your virtuosity. In the words of T. S. Elliot, you're 'distracted from distractions by distractions'.