Computers can. People can't — at least not the important stuff.
At Y2 Consulting Psychologists, we know that when people are asked to multi-task, they are — in reality — being asked to do the impossible. It's like suggesting that someone juggle several balls in the air, even though they have never done it before.
And people who claim that they can multi-task are doing no more than focusing their attention first on one task and then — in rapid succession — on another and another.
Simply put, when you try to do two (or more) things at once, chances are that you will do none of them very well.
And so while you can sing while you take a shower in the morning (something routine and familiar) or fold laundry (something routine and familiar) while you talk to the neighbor on your cell, other types of multitasking can be downright dangerous, such as texting while driving to work, or blow-drying your hair while taking a bath.