This is about extending the existing graphical UI design. Direct manipulation of graphical elements is preferred on a Mac. Think about touch on iOS devices to

This is about extending the existing graphical UI design. Direct manipulation of graphical elements is preferred on a Mac. Think about touch on iOS devices to get a sense of how important direct manipulation is to Apple. (And how the iPhone did not have copy/paste at all when it first shipped.) So, yes, they are equivalent (in certain situations, drag and drop can be a move or whatever else is appropriate). But copy/paste is the alternative. So is cp at a Terminal command line. See also: https://developer.apple.com/library/mac/#documentation/UserExperience/Conceptual/AppleHIGuidelines/HIPrinciples/HIPrinciples.html#//apple_ref/doc/uid/TP30000353-BABFCAJF https://developer.apple.com/library/mac/#documentation/UserE...