Both users accidentally flew several times when trying to

             point at something while describing it. The flying gesture

also mapped into

habitual gestures (e.g., placing a finger on the chin),

again causing inadvertent flight.

An obvious solution … is to make the flying gesture

a bit less common and natural. However, this creates a new problem. With only a few, natural gestures, learning is not a problem; but as the number of gestures increases, and as they are made ‘narrower' to prevent accidental invocation, they become more difficult to learn and remember. …There is no magic solution here: the more natural a gesture is, and the more variations the system will tolerate in recognizing it, the easier it will be to do accidentally; the less natural a gesture is, and the more stringent the system is in recognizing it, the more difficult the gesture will be to perform.¹

 

 

 

 

 

[ next ]

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back to issue three