According to Daniel H. Pink
“Conceptual innovators,” as Galenson calls them, make bold, dramatic leaps in their disciplines. They do their breakthrough work when they are young. Think Edvard Munch, Herman Melville, and Orson Welles. They make the rest of us feel like also-rans. Then there’s a second character type, someone who’s just as significant but trudging by comparison. Galenson calls this group “experimental innovators.” Geniuses like Auguste Rodin, Mark Twain, and Alfred Hitchcock proceed by a lifetime of trial and error and thus do their important work much later in their careers.