Today I channel hopped and came upon the point in the show where the actor playing Thomas Cromwell was introducing a new invention - a secret weapon that would win the propaganda war with the Roman Catholics. The printing press (spoken with special stress) - introduced to the show with cries of "by God, what is that?", and other such, from the actors.
Sadly the printing press was introduced to England during the reign of Edward IV - some sixty years before the time the scene was set, so everyone would have known exactly what a printing press was.
Getting angry with the BBC take on Tudor history.