The answers would be good and benefit because antonym means opposite, so what's the opposite of harm, well its good of course.
Well we have the famous Greek tale of Heracles, the Chinese Tale of shooting down the 49 out of 50 suns in the Sky, the Tale of how the City of Troy stood for so long even against the mighty Achilles talked about in the Illiad, and many more
From my knowledge gesture-based computing is something that is input to dives which allows computers to recognize your physical gestures.
