Now think of a human brain as CPU and it is doing multitasking. This is for sure that a human can perform multiple activities at a time, for example a person listening to a radio while typing a email. In other example a journalist listening to a statesman as well as noting down the speech in his notebook. Surely this is multitasking. But we talk about the brain’s ability to pay attention on multiple things at a time, it is quite impossible. In the above two examples both the persons do the context switching back and forth between the two activities. If it happens like, the journalist put complete focus on writing for few seconds more he may miss some dialogs of the statesman and vice versa.