Corrected entry: When Adam throws the photo to the doctor, we see it from Tapp's point of view; from the camera behind the mirror. We see it cut from Adam tossing it to Dr. Gordon catching it, however, there is only one camera recording them. A cut would be impossible.
Corrected entry: The Dr and Adam must be at least 6 meters (6.5 yards) away from each other (both completely stretching out not touching the body in the middle). However, they easily throw pictures back and forth with unflinching accuracy.
Correction: There are only two instances in the movie where a single photo is being thrown. The first time photos were exchanged Lawrence threw his entire wallet to Adam (who returned it), the second time Adam threw the single polaroid to Lawrence, the third time Adam flung a stack of large, stiff photos at Lawrence (and only a few made it all the way across), and finally when Adam throws the picture of Zep to Adam. To throw one single piece of cardboard or stiff, flat plastic that distance is not so difficult as you may think. It requires a certain technique, but it is easy to learn and can be done. And both times he does it, Adam has far from "unerring accuracy". Lawrence has to lie down and reach with his full length to get the photo.
Corrected entry: When Dr. Gordon is tucking his daughter into bed, he is wearing a white t-shirt underneath his blue collared shirt, however when he is chained to the pipe in the bathroom with Adam, he is not wearing an undershirt. In both shots the top buttons of his shirt are unbuttoned.
Correction: Dr. Gordon is wearing an undershirt. This is seen when he takes off his blue shirt to use as a tourniquet for cutting off his foot.
Corrected entry: When Dr. Gordon couldn't dial 911 on the cell phone; the fact is that 911 is considered a high priority number, even though the outgoing calls are blocked. It is impossible and against the law for service providers to block 911 calls.
Correction: I work customer service for a major cell phone provider and it is true that it is against the law to disable 911 from phones but Jigsaw was a demented killer who went into painful detail in planning these events for every event possible. It would not be imposible to access third party software and block the calls directly from the phone after hacking the hex values in the operating system on the phone. I have used such products myself to enable/disable locked functions on my own phone.
Corrected entry: During the film, the two cigarettes are placed back inside the box, one bloody, one not. One is then given to Adam. Later on when Larry is crying, we see both cigarettes (clean) lying next to him.
Correction: Actually, earlier in the movie you see some flattened cigarettes on the ground while the doctor us shuffling around, long before the box is located.
Corrected entry: The room where Lawrence and Adam are being held in is at least 10 feet underground (we know this because Zep climbs down a ladder whilst running away from Tapp). Lawrence shouldn't be able to get a mobile phone signal, yet he manages to receive two calls.
Correction: Whether you get a cell phone singal is dependent upon a lot of factors. The depth is not the only one. It would be possible to have a signal.
Corrected entry: ***SPOILER*** How did the man in the centre of the room (who we know is the mastermind of it all and not dead) get there without an accomplice locking the door? We know a possible accomplice wasn't Zep.
Correction: The door was not locked. Dr. Lawrence couldn't reach it with the chains on. Zep opened it right up at the end. So, it wasn't necessary to lock it. Also, both the Dr. and Adam were unconscious so obviously he set it all up, part of the game.
Corrected entry: The doctor takes the gun from the dead body and places the bullet into the chamber of the gun. The bullet is placed in the chamber which would be directly behind the barrel. the placement would be wrong to fire the bullet on the first pull, because revolvers turn the chamber before the hammer hits the blasting cap of the bullet. so the trigger would have to be fired until the chamber completes a whole circle.
Correction: If you watch carefully, the doctor chambers the gun but then begins cycling through the chambers until it gets into the correct position. I noticed your mistake as well but when seeing the scene a 2nd time, I caught this.
Corrected entry: After cutting his foot the Dr throws away the saw but no blood splatters around.
Correction: He had his shirt wrapped round the wound, which would have prevented blood splattering (he was a doctor remember, and would know how to do this).
Corrected entry: When the man with the candle and flammable substance is reading the combinations on the wall during a camera closeup, he is finally set on fire and burned to death. Based on the camera shot, what was in front of him was a wall with safe combinations on it. Look closely at the candle in his left hand. The fire from the candle never gets close enough to his skin to ignite the flammable substance. There is a puff of flame that comes from in front of him that creates the flash of fire that kills him.
Correction: This isn't actually a mistake. It's a scene transition. Everything in the scene is sped up, so they aren't actually going to show when the candle burns down to his hand and sets him on fire. Plus, it's a flashback that's being told by one of the detectives. They don't really know how it happened, just that it did.
Corrected entry: When Dr. Gordon is in the parking garage, he stops walking momentarily, and there is a flash of light behind him. We later learn that this flash is actually from Adam's camera. But when Adam is telling his story of following Dr. Gordon, a picture comes onto the screen of the doctor in the garage, but it is a close up of the front of his face. However, earlier in the movie, the flash came from behind him. Adam could not have taken a picture of Dr. Gordon's face from behind him.
Correction: Actually, the flash came from his left side (the light even flashes across his face). The photograph we see later is taken from a left-hand angle.
Corrected entry: SPOILER: The "dead man" turns out to be Jigsaw. How did he position Adam in the tub and get on the floor before Adam woke up? Lawrence was awake when Adam woke up, so how did he not notice what was happening? And if there was a time lapse between Jigsaw's actions and Lawrence awakening, how did Adam not drown in the tub?
Correction: Very simple: the room is so dark they cannot see anything, so Jigsaw had plenty of time to position himself before they found the light switch. It is also explained in Saw 3 that Amanda helped position Adam and the Dr and then turn the lights out on her way out.
Corrected entry: In the scene where the Zep is driving to the toilets with the old black cop driving behind him there is a shot filmed from the front of the Zep's car. Therefore there should be one set of car lights behind him, but there are actually two.
Correction: We also see a set of headlights behind the black cop when a shot is filmed from the front of his vehicle. Is it so unlikely that there could be another driver on the road?
Corrected entry: When Larry is standing by the bedroom door saying goodnight to his daughter, her bedside night light is on. He then flicks off the main light switch and it cuts back to his daughter's bed. The night light is off.
Correction: Some light switches are hooked up to lamps, and are able to be shut off by the switch.
Corrected entry: Near the end of the movie Dr Gordon shoots Adam in his left shoulder, later on Adam's wound is on his right shoulder.
Correction: He shoots him in the right shoulder, and the wound is on the right shoulder, no mistake here.
Corrected entry: Why doesn't Dr. Gordon recognise his own patient (Jigsaw), laying before him?
Correction: It was established that Dr. Gordon didn't know his own patients' names (particularly this one) when Zep had to tell the him who the patient was; it's not surprising that he wouldn't recognize the man, especially when the doctor's fearing for his own life (not to mention the fact that Jigsaw's face is covered in blood).
Correction: When lying down jigsaw's head is turned facing Adam, making it impossible for Lawrence to see his face/ recognize John.
Corrected entry: The padlocks could have easily been sawed through. Neither of them even tried.
Correction: Adam's saw broke as he tried to cut through everything around him. Do you honestly think that rusty saw could've sawed through that?
Corrected entry: In the very first scene we see Adam in a bath tub with his leg tethered in chains. Adam wakes up and jumps out of the bath. When the light is switched on we see that the chain attached to Adam's leg is just under a foot in length, which prevents him getting anywhere near the bath, let alone have all the slack to actually lie in it. This is illustrated when Adam leans over to the bath to get the bag with the photo in.
Correction: Adam's legs are facing the pole that the chain is attached to and his legs are out of the bath and as the lights are turned on you can see how close the bath is to the pole, allowing the slack he needs.
Corrected entry: When the two detectives break into the old factory and the drills start moving, why don't they just put something solid between the drills and the man's head to block them? They've got time to do so.
Correction: The reason the two cops didn't try to stop the drills is bcause they both were in a state of panic. Danny Glover was too obsessed with Jigsaw to do anything and the Asian cop just wanted to stop the drills. If he had stopped to look for something to put against the drills he may have ran out of time considering they had no idea what items were inside the warehouse. Besides, who says that the drills would have been stopped? They were probably powerful enough to cut through wood or metal, knowing how well Jigsaw is prepared.
Corrected entry: Throughout the entire movie the body in the middle of the floor (the dead guy) constantly changes his feet position, over and over - his foot is either straight down, up and bent, or to the side...
Correction: Not actually being dead might have something to do with that, it's possible that the men chained to the pipes simply didn't notice because they were too focused on their own situation.
Correction: There is only one camera recording them, but for the movie there are several cameras showing the action from multiple angles. When the scene cuts, it is not meant or required to be the camera recording them.