“Focus!” shouted the teacher. Twenty pairs of eyes squinted even as their foreheads frowned, struggling to pay attention to a dull piece of historical information. Five minutes later, needless to say, some children were stifling their yawns, some doodling furtively on the chapter pages and some were having a hard time in keeping their eyes open. And the teacher droned on with occasional outbursts of “Focus!”   Believe me, the moment we hear the word ‘focus’, we get an image of someone creasing their forehead in grim concentration, without even a shade of a smile. Well, Focus or concentration is