Continuity mistake: In the dream-café Ariadne raises her arm to scratch her head, but in the next angle the hand is down.
Continuity mistake: In the café, Ariadne lifts her cup to take a drink and in the very next shot she is putting the cup back down.
Continuity mistake: In the scene where Fischer is talking to Browning by his father's bed, in one shot, Fischer changes from looking straight at Browning to looking down at the ground.
Continuity mistake: When Cobb tells Ariadne to draw a maze, she turns her head to the left. A frame later the head is up and she is turning it again.
Continuity mistake: When Cobb hands Fischer the gun in the bathroom, the gun switches hands for one shot.
Continuity mistake: When Adriadne and Cobb sit down, a newspaper stand explodes, but in the next shot it's still standing.
Continuity mistake: As they are sitting around, planning the next job, Cobb is wearing a blue shirt, of which he rolls up the right sleeve repeatedly.
Continuity mistake: When Arthur is shot in the head, at first there's no bullet hole in his head, but in the next shot there is.
Continuity mistake: In the scene on the airplane when they are setting up to go under, Yusuf takes a sip from a wine glass and goes to set it down. Then in the shot immediately following he no longer has a wine glass in his hand. Instead he is buckling his seat belt. (01:03:50)
Continuity mistake: As Cobb is explaining to Ariadne the importance of imagining new places to create dreams, the positions of his head, arms and hands change between shots.
Answer: The answer above is solid and I agree, but there's another plausible way of looking at it. It is implied at the end that Cobb could still be dreaming (we never see if the top stops spinning). If that's the case, then he would likely dream his children to be exactly how he remembers them.
jshy7979