(at around 19 mins) When the lorry driver toots his horn, an air-horn sound is heard. To use that horn he would have to pull a cord; pressing the steering-wheel horn produces the city horn, which sounds different.
(at around 1 hour 7 minutes) After Dr. Hawking is thrown from his chair into the beehive, he speaks using his computerised voice. He cannot do that without the apparatus integrated into his chair.
(at approximately 33 minutes) When Professor Xavier is hoisted into the air from his wheelchair by his child, his legs are visibly trembling as well.
(at around 1h 7 mins) When Dragonfly realises he can fly, he develops wings that would likely tear through his suit; however, in subsequent scenes there are no rips or tears visible on his back.
(at about 23 minutes) Rick's father has the ring on when they are held up. However, when his father tells Rick to reach into his pocket to fetch the ring, the father is no longer wearing it.
(at around 23 minutes) While Rick is grappling with the thug and the gun keeps firing, he knocks over two lampposts that fall onto his mum and dad. When the thug runs off and Rick rushes to his father, there is no lamppost on his head — it isn't even in the shot. Later, when he accidentally shoots his mum, there is likewise no lamppost on her head.
(at around 1 hr 3 mins) At the awards ceremony, when Jill realises Landers is The Hourglass, a brown-haired girl dashes past Jill twice, moving in the same direction both times.
(at about 14 minutes) When Rick Ricker looks up his symptoms online, the dialogue box displays the message "It's all right, you can tell me the truth. I'm a doctor" with no choices. The camera cuts to Rick's face, then back to the computer, where an option appears on the screen.
(at approximately 44 minutes) While Dragonfly and Jill are kissing in the rain, the positions of their noses switch between shots.
(at approximately 26 minutes) While searching for a $300 car, the search engine returns a result labelled "Nissan Shitbox". However, the vehicle shown in the photograph isn't actually a Nissan — it's (what remains of) a Peugeot 309.
(at around 45 mins) When Hourglass loads a programme to destroy the world, he inserts a Windows CD into his Apple computer. He may have been running a Windows emulator, which enables Macs to run Windows programmes. Recent versions of Mac OS include a Windows emulator.
(at about the 43-minute mark) When Dragonfly slams a thug's head against the brickwork, the wall yields slightly, revealing that it is actually a softer, rubber-like material.
(at about 36 mins) In the YouTube sequence the on-screen timecode progresses in minutes instead of seconds.
(around 36 minutes in) When Dragonfly leaps from the Gargoyle's perch, it moves slightly, revealing that it is not genuine stone.
(around the 20-minute mark) Uncle Albert uses a nail gun to hang a cupboard on the wall: he fires it twice and the cupboard remains in place, yet no nails are discharged. However, the moment Rick returns, Uncle Albert accidentally fires a nail.
(at about 44 minutes) While Jill is kissing Dragonfly, her left hand rests on his right shoulder; when she slides it down his chest and away, the upper (inner) dragonfly on his chest peels away from the lower (outer) one.
