Question: Is Callahan holding the binoculars upside down when he is peering down on the apartments looking for Scorpio? He is on the rooftop with the Jesus Saves Sign. They look upside down to me. (00:38:39)
Question: When Harry delivered his famous "do you feel lucky" monologue at the start, did he know his gun was empty? And when he repeated it at the end, did he know the gun was loaded?
Answer: He certainly knew at the start, which is why he felt confident in pointing the gun at the (disarmed) robber and pulling the trigger. Harry knew he was bluffing, but passed it off so well the robber wasn't sure. At the end of the film, again, he knew he had one bullet left and wanted to bait Scorpio into attacking him, giving him an excuse to fire.
Chosen answer: That question is the entire point of the first scene. You're meant to wonder whether he knew or not. At the end of the film, you're given the impression he does know, and is hoping the killer will attack him, giving him an excuse to fire.
The way I see the scene, he knows that he still has one round, and he is giving Scorpio a chance to live. He will only fire if he has to.
Question: What happened to the kid who was fishing at the end who the guy Harry was after took hostage? I don't think Harry shot through him, but I didn't see him when the camera pans out for the credits, is he dead?
Answer: If you watch closely, you see the killer throw him to the side and then take aim at Harry, at which point Harry shoots him. Since we don't see the kid again, we can assume he ran away as soon as the killer let him go.
Not true. Actually, Harry sees the boy, and appears to be lowering his weapon, and then blasts Scorpio... and when the bullet hits him, he is still holding the boy hostage... It is only after Harry shoots him, and he falls to the ground, that we see the boy running away.
Answer: Yes the binoculars are upside down.