I see a lot of comments saying that screens sporting a resolution higher than Apple’s Retina one are not useful, because “you can’t see the pixels anyway”. In this article, I’ll explain why this belief is not true.

These days, many people advocate for the use “image sets”. Meanwhile, image sets is just a way to put more burden on the developer by asking him to specify two image urls in his markup if he want to support high-resolution screens (phones, tablets, and high-end notebooks).