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Apple QuickTime movie  |  1994-09-21  |  9.6 MB  |  440x234  |  15fps  |  1 minute, 25 seconds  |  [MooV/TVOD]
Transcription: It's very important to provide the user with a good conceptual model. This makes it easier for the user to understand what's going on and to invent new actions when the old ones don't work. But if you're not careful, if you give the wrong conceptual model, they will invent the wrong actions. Here's an example. On the desktop model, we show each directory by an icon, an icon of a file folder. The icons are within the window. A number of years ago, when the Macintosh computer was first introduced and all we had were floppy disks, my son was using the Macintosh. His directory folder looked someth ...