And when that stuff does exist, is there any guarantee it will be any more effective and certain? I'm not sure we will ever be able to say that.
Publishing has changed forever. As Joyce said, it "is no longer a mature industry."
So it has to try things and keep on trying. "Standing still is not an option," says Joyce.
Joe Pulizzi of Content Marketing Institute counseled, "Get uncomfortable. If you don't feel like you're running off the road, you are not driving fast enough."
I certainly think that's true. But the method may be quite different for fiction than non-fiction.