he claimed that if people inhaled chemical oxytocin they become happier.to take a full dose but paul zack has done other experiments with oxytocin that have succeeded. it also failed on autism and schizophrenia. paul: why it fails does you what to look for next. john: doing this experiment in america say hurdle of government gets in the way? paul: you can get fda approvals and lots of money to move forward. john: they say they want to make sure people are saved to. paul: that's true but we fail them to keep trying and you know the history of medicine is full of these happy accidents. john: so the fda safety rules may make us less safe by stopping experiments? paul: exactly so we have to balance the expected benefits but the cost. they want to develop these these drugs is how people's lives. john: they don't stop you from doing that. paul: they make it more difficult. let's take some other examples of things that were accidentally discovered. viagra was originally developed to treat high blood pressure and it didn't work very well and clinicians notice. thi