That is not the question. Teachers should focus on finding the best way to teach a particular skill, rather than dismissing or embracing one method outright.
September 26, 2012 Students Think They Can Multitask. Here's Proof They Can't. By: Maryellen Weimer, PhD in Teaching Professor Blog.
With easy access to all sorts of technology, students multitask. So, do lots of us for that matter. But students are way too convinced that multitasking is a great way to work.