This is the first Assassins Creed game I have played. Obviously the question includes spoilers:
In the final scene that takes place in present day, John (the IT guy) express his anger and disappointment that you were not possessed by Juno. I gather that Jon is a reincarnation of Bartholomew Roberts, and he seems ready to kill you out of anger with a syringe of something foul. It turns out however, that the shot John gives you was far below the lethal dosage.
Question:
What was the point of the syringe if John did not intend to kill you?