I can remember when multi-tasking was framed as the end all be all to solving heavy work loads. The premise of multi-tasking while antiquated still lurks and a large number of organizations. It does so to the detriment of those organizations. Not sure if my statement is accurate? The following is a great read with a quick exercise proving it.
http://www.psychologytoday.com/blog/creativity-without-borders/201405/the-myth-multitasking
Strategic Alignment & Results 