[GCA10]

My general sense is that academic superstars who decide to opine on world events generally do slightly better than their Hollywood counterparts ... but not much

On team academia, Linus Pauling, Edward Teller, Bertrand Russell, Paul Krugman, etc. On team Hollywood, Jane Fonda, Clint Eastwood, Al Franken, Madonna, etc. Being tremendously prominent in one domain has only a loose correlation with expertise in something else quite different.