As discussed by Shaylish Muehlmann, why can many aspects of narcotics trafficking operations run in northern Mexico by cartels be described as relying on "outsourced" labor? What types of evaluations do individuals in Northern Mexico involved in such "outsourced" narcotics trafficking activities tend to apply when comparing the risks they undertake by engaging in such activities with the benefits that they can potentially obtain? [I know this question overlaps some with what was covered in the last quiz, but I think it addresses a key theme that runs throughout Muehlmann's book and is worth emphasizing.]