I'm not sure how to elaborate ... If the CPU is busy with loading data it needs to do something --- like opening a menu --- it can't do anything but wait until the necessary data has arrived. It may do other things while waiting for ...
If that right is taken away, the PC revolution is in danger. The PC has been an enormously empowering invention, leveling the playing field between individuals and large corporations, and placing the means of production in the hands of many. There are those who would like very much to put ...