David Womersley in Standpoint:
We live, it seems, in a world of zombies. The economic crisis has created a host of metaphorical zombies-zombie banks, zombie companies, zombie households, all kept moving, if not exactly alive, by artificially low interest rates. The life of the mind also has its metaphorical zombies. In particular, there are zombie arguments, which can never be finally killed. No matter how often they are — you might think — overwhelmed by evidence to the contrary, these arguments find new advocates, are reanimated, get unsteadily to their feet, and stumble groggily onwards.
A prime example of such a zombie is the denial that the plays of Shakespeare were written by William Shakespeare, and the accompanying claim that in fact they were written by Francis Bacon, or the Earl of Oxford, or Christopher Marlowe, or even Queen Elizabeth I. It's worth just pausing for a moment, as we stand on the brink of an engagement with these assertions and before we have begun to consider their glaring weaknesses, to summarise the evidence for the straightforward view that William Shakespeare of Stratford wrote the plays attributed to him.
In the first place, in Shakespeare's lifetime plays were often written in a collaborative manner involving other playwrights, and also at moments drawing on contributions from the actors in the company which would perform the play (and which would also then own the playbook). This open and collaborative mode of composition would have made it virtually impossible for someone to pass off their work as that of someone else. The process of creating a play in Shakespeare's age was too public and involved too many people for a conspiracy over authorship to be sustained.