The graphical user interface on the original Macintosh was a revelation to me when I first used it at the tender age of 8 years old. Part of the magic was thanks to its use of "direct manipulation." This term was coined in the 1980s to describe the ability to control a computer without using the keyboard to explain what you wanted it to do. Instead of typing a command to move a file from one place to another, the user could just grab it and drag it to a new location.