i've told listeners before that my understandig of purse was channelldthrough by philosophy. It professor dick smith, who i adore as a faculty,. And he was a pragmatist, and he was interested in purse ament and um smith. As far as i understand it, through smith argued that you think you're using reason, but you really aren't. The heart has its reasons that reason does not know. For that reason, rules are often better than discretion.