Can AI Prove That Shakespeare Had Ghostwriters?

For a long time, scholars have assumed that William Shakespeare (1564–1616) (below right) was not the only author of some famous plays that bear his name. A discerning reader does not need AI for that. An author's unique style is like a fingerprint. Some scenes just don't "sound like" his work (the technical term is "a stylistic departure"). A second author proposed for Henry VIII (1623), John Fletcher (1579–1625), has been proposed as early as 1850.