Part of the reason for smART writer's sluggishness is the intense concentration required to get the program to recognize handwriting at all.

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Intense concentration swaps for giggles as one of the girls stumbles a fraction while trying to keep time with the heart-clutching melody of the song.

BBC: High spirits in Bali

It is better to dedicate two or three hours of intense focus to a skill than to spend eight hours of diffused concentration on it.

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