Different kinds of intelligence

It’s a commonplace that actors are dumb bunnies when they start talking about politics. However, I’m fascinated to note that actors (and indeed, artists in general) are often unable to talk very brilliantly even about their own work. I was reminded of this last night as I watched all the fun “How We Made This Movie” stuff on the DVD of “Forrest Gump” that I got from the library. I think “Forrest Gump” is an absolutely brilliant piece of work and I think Tom Hanks is one of the greatest actors in the world. But when Hanks *talks* about Forrest Gump he’s remarkably pedestrian in his insights. He doesn’t know how to articulate the sheer genius of what he does. Then again, people who *can* articulate insightfully about what he does (and what the film does) are typically people who could never have played Forrest Gump in a million years. I dunno, maybe those who can’t teach, do. I think Plato talks somewhere about this odd disconnect between what the artist does and what the artist is able to understand of what he does. Can anybody remember where?