kosmopolites.org
Multitasking is the Same as Multi-switching, and Neither is Good for You by Jeff Davidson – Kosmopolites
Multitasking is analogous to multi-switching. In 2012, research published in Psychology Today showed that "Multi-tasking is a myth. You are really task-switching, and it's costing you time." Moreover, "If you do a lot of switching in a day it can add up to a loss of 40% of your productivity."