“Multitasking is an efficient way to get more done.”

The idea that juggling multiple tasks simultaneously is an efficient path to greater productivity is a modern misconception, with roots in the mid-20th century. The term "multitasking" itself didn't originate with human behavior, but rather in the 1960s to describe the ability of computers to process several programs concurrently. As technology advanced and became more integrated into daily life, especially with the rise of personal computers and the internet in the 1990s, this computer-centric term was increasingly, and incorrectly, applied to human capabilities. It quickly morphed into a corporate buzzword, promoted as a desirable skill for maximizing efficiency in fast-paced work environments, leading many to believe that humans, like machines, could effortlessly handle several complex demands at once.

However, scientific research, particularly in cognitive psychology and neuroscience, has consistently debunked this notion. The human brain is not designed to perform multiple cognitive tasks simultaneously. What we perceive as multitasking is actually rapid "task-switching," where our attention quickly shifts back and forth between different demands. This constant shifting comes with a significant cognitive cost, known as "switch cost," which reduces efficiency, increases errors, and can decrease overall productivity by as much as 40%. Studies using MRI imagery, as early as 2001, have shown that our brains are not truly multitasking, but rather incurring a delay as they reorient to each new task. Only a very small percentage of the population, around 2.5%, can effectively manage multiple tasks.

Despite overwhelming evidence, the belief in the efficiency of multitasking persists because it often "feels" productive. The constant stimulation from multiple devices and open applications creates an illusion of getting more done. People also tend to overestimate their own ability to multitask effectively. This pervasive myth, fueled by technological advancements and a culture that values busyness, can lead to cognitive overload, increased stress, and ultimately, less effective work rather than more.