It is all too easy for successful writers to slide into a comfort zone and never want to leave it. Writing is such an iffy proposition, working from a formula isn’t just easier and safer for the psyche, it’s often the smartest business decision one can make--if it worked once, chances are pretty good it will work again.
The historian, author, PBS mainstay and owner of the most avuncular voice this side of Bob Ross, David McCullough has found his formula and shows no inclination to tinker with it. He's not out to stretch our minds or question the foundations of American Civilization. He's at heart a weaver of tales and he's exceedingly good at it.