First, a primer: AirDroid gives you the ability to access all of the files on your phone -- APKs, music, photos, videos and plenty more -- directly in a web app on your browser, which offers an Android-like user interface.

ENGADGET

At the fabled Xerox Palo Alto Research Center scientists sat on beanbag chairs and dreamed up inventions like the graphical user interface for small computers and the PostScript language for printers, as well as ways to link computers within an office.

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You don't need to be a user-interface guru like Don Norman to understand that, when dealing with electronic equipment, the user should always be in control.

ENGADGET: Switched On: Jane, Stop This Crazy Thing