Many people, and most millennials, love to do it - they can multitask on the cellphone's small screen alone (answer calls,see text,check apps,listen to music etc.), plus work on the laptop with several windows open and alerts popping... It's no good, humans are serial thinkers and don't have many hands like octopus. Working with focus on one thing at a time, but keeping the mind emotionally free to switch focus to something else at a short notice is GREAT, but trying to do several things at a time can really be unduly STRESSFUL.
