Surprise: I, too, have a social science degree. I studied anthropology. However, I definitely misread your initial response, so I'm happy to walk myself back and provide clarification.

I believe the shift of wealth and income towards the wealthy in the United States is a massive problem. Without recognizing the enormous role that wealth and income inequality play in one's ability to gain socioeconomic mobility, then we can't "lower the barriers" to upward social mobility (per your comment) because these inequalities often are *the* barrier. I used the doctor and the nurse to illustrate disparities in income that further wealth/income inequity that, in turn, deepen the class divide... which prevents/stymies socioeconomic mobility. The top stay at the top, the bottom stay at the bottom, etc. How do I think we can begin to solve this issue, or at the very least work towards a more equitable society? Fair wages. Affordable housing. Universal healthcare. Stronger, empowered labor movements. Universal basic income. The re-distribution of wealth and income via taxation.

TL;DR: No, a nurse should not make the same salary or more than a doctor. However, nurses–like doctors–should be paid fair wages that are commensurate with the intense physical and emotional labor they perform. Currently, they are not, and many working households (not just nurses -- this effects millions of people, as you know) will continue to see their incomes become lower as the distribution of income shifts increasingly more towards the wealthy. We need to fix this via pre-distribution policies or a re-distribution of wealth/income via taxes, so that we can have things like universal healthcare and free education.