"when something has been solved by science, philosophers stop worrying about that realm so much"
The "so much" part was what troubled me -- most of the philosophy of mind class was historical developments, etc., but occasionally it did step into the realm of science, while ignoring everything science had to offer. Perhaps I had an ill-informed professor, but when the parent says that philosophy of mind deals with "messy questions", that suggests that sometimes it can tread on the toes of fact, even if unintentionally. The inability to recognize when that was happening was what disappointed me.