I do not believe neuroscience is a prerequisite for anyone studying Descartes philosophy? At this point in history why are we still discussing Descartes philosophy with out including neuroscience?

When Plato wondered how it was possible to ensure the best in the life of a state, he thought that this task should be entrusted to philosophers who, precisely because of their ability to encompass the good of each and every one, are able to establish needs and dictate public policies to meet them. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7462448/

This project seemed plausible because, at the time of Plato, the philosopher was in fact a scholar with knowledge also in the field, for example, of the natural sciences and mathematics, as well as exercised on reflection on the great themes of the meaning of life and moral responsibilities.