Why is external criticism so important when it comes to analyzing data?

External criticism is important when it comes to analyzing data because we have to question wether or not we can trust the data and use it as a reference point.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.