In Pictures: The dumbest products of CES 2013

Acer's 'Retina-class' tablet

One of the big themes for this year's CES is 4K/high-def. Acer joined in this theme in showing off a tablet with what the company claimed is a "Retina-class display." But Acer didn't quite seem to understand how Retina displays work: Apple increased definition by increasing pixel density (each pixel is essentially broken into four pieces). Acer, meanwhile, just threw more pixels on the screen, which means it shrinks screen images in order to make them high-def. It's not quite the same thing, Acer, and not exactly a breakthrough.