Suppose that you own an "experienced" computer with an 800MHz CPU, 256 MB of RAM, and a 20GB HDD. You're constantly using this computer to type up homework for your favorite Extension School course, and so you're frequently saving files to your hard disk. But, even with a 20GB drive, you're pretty tight on disk space, so you tend to delete files a lot, particularly homework-
related files as soon as you've printed them out. Moreover, you like to play games, so you're always i nstalling and, two wasted weeks later, uninstalling the latest and greatest shoot-'em-ups.
Over time, you notice that it's taking progressively longer to save and open files on this computer as well as to install new programs. But your CPU is still running at 800 MHz. You still have 256 MB of RAM. Your hard drive can still hold 20 GB. So why in the world might your system be slowing
down? How might you solve this problem, short of buying a better computer? Technically speaking,why might your solution work?