It's really good to see a non-literary critic look at the evidence about Shakespeare's identity. Given that literary critics have a vested interest, I was very glad to read this book, which is by a scientist, a problem-solver, and a chess player (all the same person). the facts are looked at and conclusions drawn.
These conclusions mean that I can never again accept that Shakspere of Stratford wrote the wonderful plays of Shakespeare. However, I'm not too bothered about that. We have the plays and they don't get any less important simply by debunking the myth of who wrote them. People interested in this might like to watch the film "Anonymous" which is on the same topic. It starts with Derek Jacobi reading the prologue, so presumably he also doubts canonical theories.
Pointon gives us a very good example of the emperor having no clothes. The myth has been going so long that it would be impossible to drop it now, even if everyone agreed on the what the 'evidence' actually means.
Another good aspect of this book is that it shows us that Shakspere of Stratford was an interesting person in his own right, and that his identity has been stolen. The book returns this identity to him.
A very good read, inspiring us to look elsewhere for ideas about who the real Shakespeare might be.