The Book Switch Theory

[asteckley]

 @Jorge_Stolfi I'd be interested to hear more about your comment "There are several big holes and suspicious details in the latter", presumably relating to the official story of how Wilfrid got MS 408? 

See the discussion on this thread.

As I've expressed before, there is a good chance that the conventional provenance story for the VMS is substantially correct, but it is still very important to keep a clear view of what things we are certain about and what things we are assuming - and not to conflate them.
This diagram attempts to summarize the main points of evidence for the provenance and to highlight where lie the tenuous connections, that are so relied on. 

(Happy to hear of any missing points or corrections to this diagram.)