Multitasking is impossible for human beings. The human mind can only focus on one thinking task at a time. People who claim to be multitaskers don’t truly work on two tasks simultaneously. Instead, they merely switch back and forth between the two. Each switch-over requires several seconds or longer of recovery, which makes multitasking inefficient. When multitasking between driving and another task, the person is vulnerable to traffic changes that demand their immediate response. This vulnerability happens when their attention is directed away from driving, and during their recovery period when.