You don't get it
The point is that you can use your computer instantly _before_ booting into a full-blown os. That's quite handy if you only want to check your mail or quickly find some info on the web. If you want more, you can boot into Windows or Linux. Why waste precious seconds watching the boot screen and then an hourglass if you are in a hurry and all you need is instant access to the web without the bells and whistles of a full os?
Biting the hand that feeds IT
