Intelligence is perceived on someone's outcomes to society. Playing the violin extremely well is an individual outcome, which denotes individual intelligence.
On the other hand, the majority of us work for organizations, groups, teams etc, where the quality of the outcome comes from the group's collective intelligence.
I wish I could find a different version of this article named instead: "If your team is busy, it's doing something "; because then it would apply to a more significant share of our societies.
I believe that someone being busy working on social interactions (of any type, real or virtual) generates great outcomes both personally and collectively. I don't believe in meditation, reclusion, cocooning anymore. A complex world requires sophisticated groups of talented people working together to solve problems. The busy they are, the better.
Maybe this slides off the topic. But I just wanted to express my view from a different angle.