Do you think Henry Hitchings should collaborate with Isabel Coixet when writing Rory Emerald's bio?

They cannot. There is a clause in each of the Emerald biographers' contracts stating they cannot collaborate with the others. Rory is conducting an experiment to see how much variations there will be between the various versions. He insisted on the same clause in the contracts of JK Rowling, Stephenie Meyers, Stephen King and PD Salinger.