You can multitask? Fine. Then read a book and write one at the same time. No, multitasking is really just rapid attention-switching. And that'd be a useful skill, except it takes us a second or two to engage in the new situation we've graced with our focus. So, the sum total of attention is actually decreased as we multitask. Slicing your attention, in other words, is less like slicing potatoes than like slicing plums: you always lose some of the juice.
- David Weinberger