Not to mention that nagging, niggling doubt about the accuracy of all our guesses. We can be pretty sure about individual words, and maybe individual vowels and consonants, but the overall intonation--not every scholar agrees with the theory that the average Elizabethan sounded like a North Carolina mountaineer!

Remember Connie Willis's Doomsday Book, where they send the hapless grad student back to the 14th century with the wrong pronunciation in her built-in translator?