He's totally ignoring the market data. Do law partners and top investment bankers multitask?
I won't quite write "end of story" but…
Or look at the top people at [top tech conferences]. How many of them check their iPhones all the time, etc.
Lots of them.
Of course top CEOs don't multitask all the time, they multitask selectively, combined with periods of extreme focus. Still, I would say that multitasking is passing the market test. That point does not receive nearly enough attention and oddly it is usually not mentioned in the major polemics against multitasking. It's one thing to think that a seventeen-year-old teenager will multitask too much; it's another thing to make the same claim about an extremely valuable executive, surrounded by assistants, time management specialists, and so on.