Colin Charles has put up an article
explaining and defending the GNOME 2.6 "spatial Nautilus" file manager. "It sticks to the fact that people associate better with the computer's interface when they know that files and folders seem real, just like their physical equivalents, where you 'could manipulate in familiar, direct and predictable ways.' So, the spatial interface is supposed to be better, because it helps mimic real life - this makes associations easier and better for the user.
GNOME has done something ground-breaking by doing away with the browser-styled, Navigation metaphor. Everytime the contents changes within a window, people get lost, and file navigation becomes harder. So 'folders' are 'windows', now...
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