1. Gestures are the new clicks
We forget how hard scrolling webpages used to be. Most users would painstakingly move their mouse to the right edge of the screen, to use something ancient called a ‘scrollbar’.
2. The fold is really dead this time
Now scrolling is so cheap, and devices are so varied in size, ‘the fold’ is finally becoming irrelevant.
3. Users are quicker, websites are simplifying
Today every young adult is an expert web user. And even the amateurs are acting like pros: using multiple tabs, and swiping to go back a page.
4. The pixel is dead
On a desktop, a pixel was a pixel. You even had an idea of how many pixels made up an average inch: 72 dpi. Nowadays very few people know what a pixel is.