Intersectionality as Related to Diversity Studies

Though Sociologists have long studied race, class, gender, and other categories of identity, those who argue for the merits of Intersectional Theory claim that it offers a distinct advantage in understanding the power of such categories. What do you believe is that advantage?

Put in terms of this course, how would studying diversity through the lens of Intersectional Theory give you a better understanding than studying diversity without it? Try to make your answer around 500 words, and cite any pertinent sources from the course.