When Brennan and Booth first meet Harold ("mayor of mole town") he has the brown bag of food in his arms, then they switch to a shot showing his back and he is swinging his arms which indicates that he doesn't have the bag in his arms, and then when they return to the front side of Harold he is holding the brown bag.
When Dr. Goodman examines the roman artifact, he looks at it under a lit magnifying glass. However, the light is facing his face. The light on this type of instrument is supposed to be facing the object you're examining, to make details easier to see. If the light is facing the observer, all it does is light up the observer's field of view, preventing him from actually seeing the object.
When Dr. Goodman explains that Harold has given Angela a description of a Raeburn portrait, she doesn't understand the reference. Throughout the series, it is established that Angela is not only a good artist, but has extensive art history / technique knowledge. While she may not have instantly recognized that the sketch resembled a work by Sir Henry Raeburn, she should have understood the reference once Dr. Goodman points it out.