Feb 5 2011: It would be amazing if a virtual reality game had an extension where one could design their own items in a CAD program and even program the controls in an open-source labview style environment. Other users could modify your designs to their own ends and perhaps develop new technologies in a format ready to get sent to the machine shop or uploaded to a microcontroller.
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A comment on Talk: Jane McGonigal: Gaming can make a better world