I imagine two things that make simple analysis harder. 1) once an author has a sufficient library, hiring a team to emulate them is easier (Tom Clancy, Hanz Zi

I imagine two things that make simple analysis harder. 1) once an author has a sufficient library, hiring a team to emulate them is easier (Tom Clancy, Hanz Zimmer.) 2) if in a collaboration, a partner could write a skeleton or first draft, and the main author could edit and fill in the cracks. Conversely they could write scattered sentences and have their partner flesh out filler.