Greater attention to the task
Multitasking opportunities are sci-fi traps for the general public. There are entities that programme victims as biotronic gadgets,create artificial syndromes of diseases & crimes and even death,without the victims knowing anything about such a conspiracy. Now general human life is damn risky. High-tech Sci-fi magic tricks can easily hoodwink public law in many countries. People will remain ignorant if viable measures are not explained in the public forum.
see the article from National Paper entitled "Working Smarter Not Harder" circa 2006 - 2007.
The idea is to complete a task successfully, thus benefiting the company, "a job well done", and benefiting personally from the satisfaction of the same.
Context shifting all day is really hard, focus on a few things always leads to more quality output.
I've never been a fan of multi-tasking. Too easy to make a mistake on the various projects one is assigned to do. Companies that require multi-tasking are simply to cheap to hire enough people.