Learn. i studied and tool at universities. for example at the university of maryland and baltimore. while the president and his students are investigating the mechanisms behind laughter. my main motivation was to learn about brain and behavior and laughter is an ideal place to look first of all laughter is a human universal and if we want to learn about a brain mechanism we don't want this person to have it on this person not we want everyone to have it we want males and females to have it members of every culture and everyone laughs and pretty much the same way so there's a good place to look...