Originally Posted by
shinta|hikari
There is evidence it works like a video camera, because they clearly recorded the "kidnapping" from the ball the soldier was holding, and we've seen the King watch a fight that happened in the past from a ball just like it. At the very least, that means the ball can record and playback video. Why the heck would you have 2 balls that look the same, and one just records, and the other just displays? Sure maybe they had such a dumb magical artifact, but it is more reasonable to assume it's one device that does both.
The orb may or may not have been in the ship fight (somewhere hidden from view, for example), but that doesn't matter. It was there in the assassination and throne scenes. That's solid and direct (vs circumstantial) evidence.