User blog comment:Rupert Giles/Layout Changes: Breakpoints and Typography/@comment-1605682-20150520013627/@comment-8-20150520032756

The goal is to have people on larger screens viewing things similarly to those on smaller ones, so that people can design pages that work for all. Previously, people would often create their pages in a way that looked great on large screens, but was broken on smaller laptops or tablets. That's what we want to fix