Because of the iPad, 2010 will likely be remembered as a landmark year in computing. It will rank right up there with 1984 when the graphical user interface debuted to the masses in the first Macintosh, and 1995 when the launch of Windows 95 made PCs much easier to use at a time when a lot more people were about to buy computers to connect to the Internet.
However, as groundbreaking as the iPad is, its capabilities sometimes get exaggerated — not the least of which by Apple itself, which repeatedly refers to it as “magical” and “revolutionary.”
In short: Drag and drop doesn't work, drop down menus don't work, AJAX doesn't work, and of course flash does not work. But it does those two things better than a PC.