Christine McCleary leaves glasses in different prescriptions and combinations in strategic spots around the house, including bifocal sunglasses for driving and two strengths of computer glasses for multitasking.
Nonetheless, the term multitasking originally comes out of the computer science literature, and refers to independent computing threads run at the same time.
When you consider this in context of the ultra-short attention given to computer and television screens among a growing media multitasking crowd, experience- based marketing is ever more appealing.
Multitasking is far more important on the personal computer -- whose windowed UI and raw horsepower make it not just a luxury but a necessity -- and one way the personal computer trumps the phone.