I think up until the point when we started in the business, which was in the early '70s, most of the humor was political. The smart humor was political satire.
The satirist who writes nothing but satire should write but little - or it will seem that his satire springs rather from his own caustic nature than from the sins of the world in which he lives.
Comedy has to be done en clair. You can't blunt the edge of wit or the point of satire with obscurity. Try to imagine a famous witty saying that is not immediately clear.