Questions Arising

[poliphilo]

Why doesn't Gautama spell out what he means by "right" living etc? Is it because he thinks the term has been sufficiently defined in his first three truths? Or because he believes his listeners are already in possession of a perfectly adequate idea of "the good". 

One of the strands of the Eightfold path is "right livelihood". Are there professions that put you beyond the pale? Or is it enough that one does one's work- whatever it is- according to the highest professional standards.