Scott Jehl is a Senior Experience Engineer at Catchpoint who cares about creating fast, compelling digital experiences that can be delivered to the broadest possible audience. He is the creator of the Lightning-Fast Web Performance Course, author of Responsible Responsive Design (A Book Apart, 2014), and co-author of Designing with Progressive Enhancement (New Riders, 2010). He is also a frequent speaker at web conferences around the world. More at scottjehl.com.