Textual Criticism Texts - The Tragicall History of D. Faustus by Christopher Marlowe (1604)

Crafty Faustus sells his soul to the devil for knowledge and power. What could possibly go wrong?

This play exists in two versions: the 1604 A text and the 1609 second edition, or A2. Compare and contrast the two versions. What differences can you see?

Which of the two versions of the play do you think is more authoritative? If it is difficult to decide, why do you think that is that so?