Talent is one thing.
Active skill is quite another.
While not having the first means that we won't ever develop the second, it is not true that not having the second means that we don't have the first. I am convinced we do. But they lie in experience. As such they are much more available to older than to younger individuals, more evident to teachers than to students, and more evident still for teachers from different specialties who have discussed the issue among themselves. On the basis of my own experience, as a formal and informal student of a fair variety of academic discipline, as a teacher in the humanities, and as one who has discussed these matters repeatedly over the years with people in math, physics, biology, computer science, history, political science, sociology, anthropology, economics, law, and philosophy, I am fully persuaded that the intelligence called upon by these different fields is completely general.