b'10|RODOLFO E. SUBIETAin sciences ability to solve problems and in its humility. Humility?Scientistscanbeveryarrogant people,youmayrightfullyobserve.However, a true scientist can never profess to know the whole and absolute truth about anything. A sci-entific theory by definition is, and forever will be,incompleteandopentorevision.Atrue scientist knows that his or her theory is only a model, an approximation of the truth, which in time must and will be replaced by a better ap-proximation, and in turn this one too will be re-placed by a better one still. And that is perfectly fine,becausethatshowscienceadvancesand polices itself, and how new technologies replace old ones. The emotional and intellectual reward of a scientist is that, for a moment, he or she is closer than anybody else to the understanding of a particular natural phenomenon.Then, as I matured, I also realized that certain intangible but undeniable human characteristics, such as our universal yearning for fairness and justice or the concept of trustworthiness, both crucially relevant to our interactions with other human beingsthus to salesmanship, could not be explained by the natural sciences alone; help from a different discipline was needed. Historical'